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Finance, Accounting and Business Analysis 
Volume 4 Issue 1, 2022 

http://faba.bg 

The Reform of the European Union System of Own Resources – 

Challenges and Prospects  

Nelly Popova  

University of National and World Economy, Sofia, Bulgaria 

Info Articles  
 

Abstract 

Keywords:  
EU budget, own resources, reforms, 
economic integration 

 The present article is devoted to the reform of the system of own resources 

undertaken in the context of adoption of the long-term EU budget for 2021-2027. 
Although the introduction of these reforms was a result of exceptional 
circumstances, the necessity to modernise the revenue side of the EU has been 
acknowledged for a long time. The changes in the system of own resources in 2021-
2027 were driven mainly by the necessity to provide new sources of revenue to 
ensure the repayment of the debts incurred in relation to the post-pandemic recovery 
of the Member States. The second objective of the reforms was to diversify the 
revenue structure of the budget. The new instruments to finance the EU budget 
agreed by the Member States and the European Commission can be considered as 
“genuine” own resources since they are related to EU policy priorities. However, 
given the strong increase of EU expenditure after the pandemic and the imminent 
repayment of the common debt, the system of own resources faces important 
challenges. 

 

  

   

*Address Correspondence:   
E-mail: npopova@unwe.bg 
 

 

 



Finance, Accounting and Business Analysis 4 (1) 2022 

35 

 

INTRODUCTION 

 

The EU budget has been the basis of the integration process. It has as a main purpose to fund EU 
policies and programmes and it is financed entirely with own resources. Over the past decades, however, 
the integration on the revenue side of the budget has considerably lacked behind with the last major 
reforms dating back to the end of the 1980s. Moreover, the predominant share of national contributions 
in the revenue structure has limited the capacity of the budget to adjust to changing context and to 
finance new EU priorities and policies. Although the necessity to reform the revenue side of the budget 
has been acknowledged for a long time, actions for reforms were taken only recently. The main driving 
forces have been the withdrawal of the United Kingdom from the EU and especially the severe economic 
crisis caused by the COVID-19 pandemic. The latter event influenced the outcome of the negotiations on 
the long-term budget of the EU for 2021-2027 in favour of more fiscal federalism, including the issuance 
of common debt to finance EU expenditure. The reforms in the system of own resources involved some 
changes in the already existing financing methods as well as the introduction of new types of own 
resources that are closely related to EU policies and priorities related to green transition and 
digitalisation.  

Against this background, the present article is devoted to the reforms in the system of own 
resources agreed during the preparation of the EU long-term budget for 2021-2027. The purpose of the 
article is to analyse the main components of the reform package and to address some potential challenges 
and risks related to their implementation. Special attention is given to the proposed new types of own 
resources. The rest of the article is structured as follows: the second part outlines the main characteristics 
and developments of the revenue side of the EU budget since the beginning of the integration process; the 
third part analyses the main changes in the own resource system after 2021 and their prospects; and the 
fourth part concludes. 

 
Main characteristics of the revenue side of the EU budget  

The EU budget differs in many respects from national budgets and its fundamental principles are 
laid out in the Treaty on the functioning of the EU (TFEU). In particular, TFEU stipulates that the revenue 
and expenditure in the budget are to be in balance, which rules out the possibility to finance the budget 
with borrowing. The Treaty requires also that the Union provides itself with the means necessary to 
attain its objectives and carry through its policies and that the budget is financed wholly from own 
resources (Official Journal of the European Union 2012). The aim of these principles is to ensure fiscal 
discipline at an EU level. Additionally, the basic rules for the own resources system are laid down 
periodically in a Council decision adopted unanimously by the EU Council (European Commission 2022a).  

As can be seen in Figure 1, the revenue structure of the EU budget has undergone significant 
changes since the beginning of the integration process. At the onset of the European Communities, their 
expenditures were covered entirely with financial contributions by the six founding Member States. The 
development of the first common policies led to diversification of the financing methods. The adoption in 
1970 of the Decision on the replacement of financial contributions from the Member States by the 
European Communities’ own resources was of key importance as the European Community was to be 
gradually given financial autonomy through the provision of own resources (European Communities 
2000, 25).  

Throughout the 1970s, the main own resources were the agricultural levies (including on the 
imports of agricultural goods from third countries) and the customs duties, which together raised almost 
56% of total revenue. The remaining part of the revenue was covered by financial contributions from the 
Member States (under the heading Miscellaneous). In the following decades, however, receipts from 
customs tariffs and agricultural levies declined sharply, due to trade liberalisation on a global scale. 
Therefore, new financing sources were necessary to cover the increasing expenditure. Revenues from 
customs tariffs are referred to as Traditional Own Resources.1 They are considered to be genuine own 
resources for the EU budget as they are derived from the common policies and they accrue directly to the 
EU budget (European Commission, 2017, p. 8). The area of customs duties falls under the exclusive 
competence of the Union. Member States retain, as collection costs, a certain part of the established 
amounts of Traditional Own resources. In the past, this share was 10%, but in 2001 it was increased to 
25% and in 2014 it was set at 20% (European Commission 2014, 191). 

At the end of the 1970’s, a new budget-balancing own resource was introduced on the basis of 
VAT revenue. It was calculated by applying a uniform rate (initially 1% and subsequently increased to 
1.4%) to the VAT base of each Member State, also determined in a uniform method (European 

 
1 Subsequently, agricultural levies were incorporated into customs duties. 



Finance, Accounting and Business Analysis 4 (1) 2022 

36 

 

Communities 2000, 16). Between 1980 and 1990s the VAT-based own resource was the most important 
financing method as its share in total budget revenue reached almost 60%. The significant decline in the 
revenue from VAT-based contributions observed after 1990 is a result of several reductions of the call 
rate used to calculate the Member States’ contributions (European Parliament 2019). Furthermore, the 
system for determining the VAT-based own resource has been criticised repeatedly by the Court of 
Auditors, the European Parliament and Member States as overly complex. The European Council of July 
2020 has therefore concluded that it is appropriate to simplify the calculation of that own resource 
(Official Journal of the European Union 2020). 

The system of own resources underwent its most important reform in 1988 after the 
establishment of the Single market and the territorial expansion of the European Community. To avoid 
yearly difficult discussions maximum ceilings by categories of expenditure are determined for a longer 
period, usually seven years, in Multiannual Financial Frameworks (Bisciari et al. 2021, 30). The reform 
introduced for the first time a ceiling of own resources (as well as expenditure) so as to contain the larger 
budget. Initially, the ceiling of the own resources was set at 1.3% of GNP; then, in early 1990s it was 
raised to 1.335% of GNP to support higher expenditure on the internal market and preparation for the 
euro. The own resources ceiling is normally much higher than the annual expenditure ceilings, thus 
allowing the EU to meet its payment commitments, even in the event of an unexpected economic 
downturn. In addition, there is a certain amount of scope to mobilise additional expenditure over and 
above the annual expenditure ceilings in the face of unforeseen circumstances, without impinging on the 
own resources ceiling (Deutsche Bundesbank 2020). 

The 1988 reform involved also the introduction of a new own resource which was derived 
directly from the gross national product (GNP) of the Member States. At the end of 2000s the basis for 
calculating the Member States’ contributions as well as Own resources ceiling was changed from Gross 
national product to Gross national income. The GNI-based contributions (also known as national 
contributions) were established as a residual element of the system of own resources to ensure that all 
agreed expenditures in the annual budgets are sufficiently covered and to guarantee that the EU budget is 
always balanced at the stage if its adoption (European Commission 2022b). Nevertheless, they gradually 
became the most important financing method of the EU budget. In 2010, national contributions reached 
almost 76% of total EU revenue and, although afterwards their share has decreased, as of 2020 they 
accounted for around 72% of total receipts. When combined with VAT-based contributions, the share of 
national contributions in the EU budget exceeds 80%.  

 

  
Source:  Own calculations based on European Commission data  

Figure 1. Revenue structure of the EU budget  

 
The original aim of the GNI-based contributions was to guarantee that the EU budget would be in 

balance. Another advantage of this financing method is that gross national income is an objective welfare 
indicator and thus it reflects the Member States’ ability to pay. Moreover, as the contributions are fixed as 
percentage of GNI, their amount automatically adjusts in accordance with the business cycle stage. 



Finance, Accounting and Business Analysis 4 (1) 2022 

37 

 

Finally, GNI-based contributions ensure stability and regularity of budget revenue.  
On the other hand, the GNI-based contributions are not a “genuine” Own resource for the EU 

budget, as they constitute a part of Member States’ public revenue. As a result of their introduction, 
Member States increasingly measured the benefits from their EU membership by simply comparing the 
contributions to the EU to the direct cash receipts coming from EU programmes, ignoring the substantive 
benefits of joint action (European Commission 2017, 5). Furthermore, the reliance on this source limited 
the Union’s possibilities to provide public goods with European dimension. Finally, several Member 
States from Northern Europe became net donors in the EU budget because their annual contributions 
exceeded the amount of the funds received under the Common agricultural policy. The claims for “fair 
return” led to the introduction of a financial rebate of 66% of United Kingdom’s net contribution to the 
budget, which had to be financed by other Member States’ contributions (European Parliament, 2019, p. 
15). Subsequently, five other Member States from Northern Europe were also entitled to financial 
corrections of their contributions. The aim of these rebates has been to limit the financial burden on 
individual Member States which receive relatively low returns from the EU budget. However, all other 
things being equal, rebates for individual Member States increase the general GNI-based own resource, 
which all countries contribute on a pro rata basis (Deutsche Bundesbank 2020). Moreover, the complex 
system of corrections reduces the transparency of EU budget financing and creates recurrent tensions 
among the Member States. 

After the introduction of the GNI-based own resource, progress to reform the revenue side of the 
budget was quite limited (European Commission 2021a, p. 5). There were changes only with respect to 
the ceiling of the Own resources, which was gradually reduced to 1.31% in 2007 of gross national income 
(GNI) and then to 1.29% of GNI in 2014 (cite). According to Buti and Nava (2003) the lack of any 
significant reforms can be attributed to the “budgetary peace” achieved in late 1980s between the 
institutions involved in the EU budget procedure, the Commission, the Council and the European 
Parliament achieved. The improved stability of the budget procedure reduced the flexibility of the budget 
and increased the complexity of its governing rules (Buti and Nava 2003 18). Another reason for the 
impasse is rooted in the limited competences of the EU in tax affairs. As Begg (2016) pointed out, the fact 
that the European Parliament has only a consultative role in the procedure for adoption of Own resources 
Decisions is in contrast to its co-decision role in expenditure and means that revenue raising in the EU is 
essentially an inter-governmental deal. At the same time, the difficulties for the Member States to agree 
on new financing methods are well-known. Most of them oppose to the introduction of “EU taxes” due to 
fears of loss of tax sovereignty.  

In successive rounds of MFF negotiations, attempts have been made by the European 
Commission, usually with support from the European Parliament, to assign particular taxes to the EU. 
However, despite extensive efforts to identify and justify suitable new Own resources, the Member States 
have consistently rejected these initiatives on the grounds that tax setting is a power reserved to them. In 
practice, the EU has only pretty limited powers in relation to harmonisation of Value added tax designed 
to prevent distortion of competition, but has little influence other indirect taxes and none on direct taxes 
(Begg 2016, 5). 

In recent years, the European Commission has emphasised the necessity to modernise and 
difersify the revenue side of the EU budget in order to strengthen its alignment with EU policies and 
priorities. Other important arguments in favour of reforms have been to design new Own resources that 
bring also additional benefits alongside new income streams, to bring more proportionality, fairness and 
stabilising impact to the EU budget, and reducing the weight of the GNI-based own resource in the EU 
budget. 

The proposals to introduce new sources of revenue in the 2014-2020 MFF did not receive the 
necessary unanimous support (European Commission, 2021, p. 5). During the preparation of the 
Multiannual Financial Framework (MFF) for 2021-2027, the Commission proposed a number of reforms 
to the System of Own resources. Among these was an elimination of all corrections on the revenue side of 
the budget as well simplification of the VAT-based Own resource. The reform package suggested also the 
introduction of three new Own resources, namely revenue from the emissions trading system, the 
Common Consolidated Corporate Tax Base and national contributions based on the amount of non-
recycled plastic packaging waste. According to the Commission’s calculations these new financing 
methods could amount to about 12% of total EU budget revenue which would allow reductions of the 
national contributions (European Commission, 2018, p. 27).  

 
Reforms of the own resource System in 2021-2027 and prospects for the future   

The negotiations on the EU long-term budget for 2021-2027 coincided with United Kingdom’s 
withdrawal from the EU and the COVID-19 pandemic and were strongly influenced by them. Both events 

https://ec.europa.eu/info/strategy/eu-budget/long-term-eu-budget/2021-2027/revenue/own-resources/national-contributions_en


Finance, Accounting and Business Analysis 4 (1) 2022 

38 

 

gave an incentive for significant reforms on the revenue side of the budget. The most important change, in 
response to the economic crisis triggered by the pandemic, was the start of borrowing by the European 
Commission on the financial markets to finance the expenditure under the recovery programme Next 
Generation EU (NGEU). Although NGEU is not a formal part of the Multiannual financial framework, it will 
have important implications on EU public finances in the future, because the loans will have to be repaid.  
To ensure that the EC will be able to cover all liabilities resulting from the NGEU, as a guarantee, the 
ceiling for payments has been raised to 2% of GNI. The need to resort to this additional allocation is 
temporary since the relevant financial obligations and contingent liabilities will decline over time as the 
borrowed funds are repaid and the loans mature. The increase should expire when all borrowed funds 
have been repaid, i.e. by 31 December 2058 at the latest (Bisciari et al. 2021 39).   

The capacity of the EU to repay the debt incurred under NGEU will require either the 
introduction of new own resources or an increase in GNI-based contributions. Therefore, the Member 
States committed to reform the System of own resources (European Commission 2021a, 14). In order to 
better align the Union’s financing instruments with its policy priorities, to better reflect the role of the 
Union budget in the functioning of the single market, to better support the objectives of Union policies 
and to reduce Member States’ contributions based on gross national income (GNI), the European Council 
of July 2020 concluded that over the coming years the Union would work towards reforming the system 
of own resources and introduce new own resources (Official Journal of the European Union 2020). 

The reforms on the revenue side of the budget were specified in the Decision on the system of 
own resources adopted from December 2020.2 Among the most important changes was the introduction 
of a new type of own resource to finance the EU budget from the beginning of 2021, namely the national 
contributions based on the quantity of non-recycled plastic waste. Member states pay a levy of EUR 0.8 
per kilogram of non-recycled plastic packaging waste, but a correction mechanism ensures that poorer 
Member States do not pay disproportionately high levies. Its objective is to create incentives for member 
states to reduce waste and increase recycling (Körner 2020). The adoption of the new own resource was 
symbolic as it broke a stalemate of more than 30 years (Reininger 2021). In terms of fiscal revenue, 
however, it is expected to have modest effects since the projected receipts amount to only EUR 5.9 billion 
or around 3.5% of total revenue in 2022 budget (European Commission 2021c).  

 

 
Source: Own calculations based on European Commission data  

Figure 2: Revenue structure of the EU budget in 2022 

 
The reform of the own resources system included also a number of changes in the existing own 

resources, but most of them were not as ambitious as initially planned. Most importantly, the GNI-based 
contributions will not be subject to any significant changes in 2021-2027. The budget discounts for five 
Member States3 will be kept despite the end of the United Kingdom rebate. While there was a general 
agreement to transform all existing corrections into lump sum discounts to some Member States’ GNI-
based contributions, the Member States could not reach a consensus on their reduction over time 
(European Commission, 2021a, p. 14). With regard to the VAT-based own resource, the uniform call rate 
will be kept at 0.3% in 2021-2027. However, the reform involved a simplification of the definition of the 
tax base used for the calculation of the VAT-based national contributions. Additionally, the reduced call 
rates applied previously for three Member States were abolished (Körner 2020). On the other hand, the 

 
2 Council Decision (EU, EURATOM) 2020/2053 of 14 December 2020 on the system of own resources of the 

European Union and repealing Decision 2014/335/EU, Euratom 
3 Austria, Denmark, Germany, the Netherlands and Sweden 

11%

11%

67%

7%
4% Customs duties

VAT-based own resource

GNI-based own resource

Other revenue

Plastic packaging waste

own resource



Finance, Accounting and Business Analysis 4 (1) 2022 

39 

 

amount of the contributions was capped at 50% of GNI, contrary to the Commission’s proposal (Reininger 
2021, 34) and implies less revenue from this resource in the EU budget. The most important change in the 
Traditional Own Resources was an increase of the retention rate of customs duties revenue for the 
Member States with 5 percentage points to 25%. The increase was in contradiction with the initial 
proposal, which envisaged the retention rate to be set at 10%, ant it will further reduce the share of 
customs duties in the EU budget after 2021. 

In compliance with the Decision on the system of own resources, at the end of 2021 the European 
Commission put forward a proposal with three new sources of revenue to the EU budget, namely:  

- an own resource based on the EU Emissions trading system (EU ETS);  
- an own resource based on the Carbon Border Adjustment Mechanism (CBAM); and  
- an own resource based on the taxation of the residual profits of multinational enterprises 

(European Commission 2021b).   
Their introduction aims to bring in line the financing of the EU budget with the Union’s long-term 

priorities, but also to help repaying the debt under NGEU. In particular, the establishment of the own 
resources based on EU ETS and CBAM is directly linked to the goals set in the European Green Deal to 
reduce net greenhouse emissions by at least 55% by 2030 and become climate neutral by 2050 
(European Commission 2021c). On its part, the own resource based on the taxation of the profits of 
multinational enterprises reflects the efforts to adapt company taxation to digitalisation and reduce the 
possibilities for tax avoidance. The entry into force of the three new resources is scheduled at the 
beginning of 2023. Additionally, the European Commission will propose further own resources by June 
2024, including a Financial Transaction Tax, a financial contribution linked to the corporate sector or a 
new consolidated corporate income tax base. 

 
Table 1: New Own resources to finance the EU budget   

Type of Own resource Description Projected revenue per year  

Own resource based on the 

emissions trading system 

Application of a uniform rate of 

25% to the revenues generated 

from the auctioning of 

allowances by the Member States 

under the Emissions trading 

system 

EUR 12 billion on average in 

2026-2030 

Own resource based on the 

Carbon Border Adjustment 

Mechanism  

Application of a uniform call rate 

equal to 75% of the revenues 

from the sale of certificates of the 

carbon border adjustment 

mechanism 

EUR 1 billion on average in 

2026-2030 

Own resource based on the 

reallocated profits of very large 

multinational enterprises 

Application of a uniform call rate 

of 15% to the share of residual 

profit of multinational enterprises 

reallocated to Member States 

Between EUR 2.5 and EUR 4 

billion  

Source: European Commission 2021d, 2021b 

 
At this stage, the exact amount of the revenue from these new financial instruments in the EU 

budget cannot be determined with precision, but according to the European Commission’s preliminary 
assessments, as presented in Table 1, the receipts would be relatively low. It should be noted also that the 
receipts from EU ETS and CBAM will completely deplete until 2050 if the targets of the Green Deal are 
met by the deadline. On the other hand, the repayment of the debt incurred under NGEU is scheduled 
until 2058. Therefore, new financing methods would be required in the future to cover the expenditure of 
the Union.  

The practical application of these new financing methods is surrounded with uncertainties 
because of the technical complexities involved and mainly because they affect third countries. In case that 
these own resources are not introduced in the following years, or if the revenue that they raise is 
insufficient, the repayment of the loans under NGEU would require increases in Member States’ GNI-
based contributions.  

The own resource based on EU’s Emissions trading system (EU ETS) is the only new financing 
method that can be introduced relatively fast as this system already exists and it involves only the 
Member States. EU ETS sets an absolute cap on the greenhouse gas emissions from the activities under its 
scope and allows tradability of allowance. Currently, the revenues from emission trading accrue to 
national budgets, but part of them will be redirected to the EU budget after the entry into force of the new 



Finance, Accounting and Business Analysis 4 (1) 2022 

40 

 

financing method. Fuest and Pisani-Ferry (2020) argue that the revenues generated under EU ETS are the 
best possible option for a new own resource and recommend that the entire amount of revenues accrue 
to the EU budget, rather than to the Member States where the emissions occur, to better reflect the 
negative externalities from pollution. These authors assess that under a realistic decarbonisation 
scenario, revenues from the emission trading system over the 2020-2050 would be sufficient to repay the 
NGEU debt. However, according to the Own resources Decision, only 25% of Member States’ revenues 
from the auctioning of allowances will be directed to the EU budget with the remaining part left to 
national budgets.  

To avoid an excessively regressive impact on contributions from the emissions trading, a 
maximum contribution will be established for eligible Member States (European Commission 2021b).  

The own resource based on the Carbon Border Adjustment Mechanism (CBAM) will consist in the 
application of a uniform call rate of 75% of the revenues from the sale of certificates to companies from 
third countries for the imports of carbon-intensive products. Its main objective is to avoid the so-called 
carbon leakage by charging additional prices on the imports of carbon-intensive products from third 
countries. CBAM is designed to function in parallel to the EU’s Emissions Trading System (EU ETS) to 
complement its functioning on imported goods and the ultimate goal is to replace the existing EU 
mechanisms, in particular the free allocation of EU ETS allowances (Council of the European Union 
2022a). Unlike EU ETS, the border adjustment mechanism will not establish quantitative limits to import, 
so as to ensure that trade flows are not restricted. Another difference between the two regimes is that the 
EU ETS applies to installations in the Union, while the CBAM should be applied to certain goods imported 
into the customs territory of the EU (Council of the European Union 2022 8). Thus, the CBA is comparable 
to custom duties (Körner 2020). The mechanism is expected to start raising revenue only after 2026, due 
to a necessary transition and information gathering period. Furthermore, the war in Ukraine could impact 
the stability of the mechanism as an own resource for the EU budget (Bray 2022). In an empirical study 
Bellora and Fontagne (2022) concluded that CBAM would be more efficient than free allowances in 
reducing carbon leakages. These authors argued also that there is a tension between two polar 
approaches in designing the European CBAM: on the one hand, a more conservative approach that 
minimises the risk of retaliation by trading partners but has a smaller environmental impact; on the other 
hand, a more complex design that reduces the leakages to a much greater extent, that limits the cost for 
EU exporters of ETS products, but discriminates more between trading partners.  

The third new own resource proposed by the European Commission involves the application of a 
uniform call rate of 15% to the share of residual profit of the largest multinational enterprises reallocated 
to the Member States (European Commission 2021b). The introduction of this instrument is related to 
EU’s objective to modernise the rules for taxation of the profits generated by the largest multinational 
companies operating in the digital economy. Over the past years, there have been several proposals for 
reforms in the field of company taxation on an EU level, but none of them has obtained the necessary 
unanimous consent of the Member States. The introduction of this own resource, however, depends on 
the implementation on a global scale of a minimum tax rate of 15% on the profits of multinational 
enterprises. Over 130 countries worldwide have reached a principal agreement on the implementation of 
such a tax from the beginning of 2023 within the Base Erosion and Profit Shifting (BEPS) Project of 
OECD/G20 (OECD 2022), but the formal adoption of a Multilateral Convention is still pending. 

Overall, the changes in the own resource system have been much more limited in comparison to 
the significant increase in expenditure after 2021. The uneven development of the revenue and 
expenditure sides of the EU budget gives rise to risks to fiscal sustainability.   

 
CONCLUSION 

 
Despite the deepening integration in the European Union, the revenue side of the Union budget 

has evolved in the opposite direction with the share of the “genuine” own resources, such as customs 
duties, decreasing at the expense of national contributions. The lack of significant progress towards the 
development of new financing methods can be attributed to the rigid procedures related to the adoption 
of the long-term EU budget as well as to the reluctance of the Member States to renounce sovereignty in 
taxation.  

The reforms in the system of own resources introduced with MFF 2021-2027 constitute an 
important advance given the lack of any major reforms in the past decades. Moreover, they diversify the 
revenue structure of the EU budget and increase the share of “genuine” own resources that are linked to 
EU policy priorities, specifically the green transition and the digital transformation.  

Overall, the changes on the revenue side of the EU budget after 2021 have been relatively limited, 
especially when compared to the strong increase of EU expenditure. The expected budget revenue from 



Finance, Accounting and Business Analysis 4 (1) 2022 

41 

 

the new financing instruments will be relatively low, thus they will not be sufficient to cover the 
repayment of the EU debt incurred in relation to the post-pandemic economic recovery of the Member 
States. Furthermore, the practical implantation of the new own resources may encounter difficulties in an 
increasingly complex international context. Considering the repayment of the common debt of the EU and 
the growing number of common challenges, more reforms in the system of own resources are to be 
expected in the following years. 

 
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