The claim does not specify which year's data or which specific error rate methodology is being referenced (residual error rate, estimated level of error, or other measure). The 5.7% figure may refer to specific years within the 2021-2027 programming period. Different audit sources may report slightly different figures depending on methodology.
The European Parliament study 'Error rates compared' (2025) provides detailed context on different error rate measurements that could clarify which specific figure the MEP is citing.
SecondaryEuropean Parliament - Error rates compared studyStudy comparing different estimates of error levels affecting EU expenditure in cohesion policy, published in 2025 covering recent programming periods