The terms of payment are incorrect

What causes this issue?

The payment terms have been maintained inconsistently.

System Response

No processing

How to fix this error?

Check the payment terms entered. Consider the following:
the day specifications must be in ascending order
the percentage rates must be in descending order
the terms of payment must be entered continuously either from left to
right or from top to bottom.

Error message extract from SAP system. Copyright SAP SE.