Retention tax amount is higher than tax amount of original document

What causes this issue?

You want to enter a tax amount in the original document. The tax amount
that you have entered is lower than the tax amount for the retention
document.

System Response

The system cannot post the document.

How to fix this error?

Enter a higher tax amount in the original document.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.