Conflicting posting requests exist for table &1

What causes this issue?

The set of return data for automatic maintenance is not unique.

System Response

Database changes cannot be made.

How to fix this error?

INCLUDE ISR_VERWALTUNG OBJECT DOKU ID TX

Procedure for System Administrators

The user exit for a automatic maintenance generated a double entry for
either table WMQK, WMQKT, WMQP, or TWMWQ. For example, it may have
created two records for the same quota scale item (WMQP). Please check
the logic.

Error message extract from SAP system. Copyright SAP SE.