When creating AFPs with retentions, it has been observed that the retention percentage does not always calculate correctly. This creates issues when we receive payment certificates from customers, as we are unable to match the values accurately.

For example, in a contract with a value of £75,542.08 and a 5% retention, the expected retention amount should be £3,777.10. However, the application calculates the retention as £3,777.16, resulting in a 3p discrepancy when releasing the interim retentions.

Could you please provide guidance on how to resolve this issue? It may cause problems with customers when paying invoices.