Overlap for &1, &2, between &3 and &4 was resolved

What causes this issue?

The time-dependent minimum and maximum stock levels for promotions in
the time period specified overlap for the combination of material and
plant.
For the combination of material and plant for different promotions, you
have entered time-dependent data for overlapping time periods
(transaction WRF_DISP_PROMO).

System Response

The standard method was used to resolve the overlap.

How to fix this error?

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

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.