SAP Message 0D771 - Errors occurred between &1 &2 and &3 &4 when deleting lock data

Diagnosis
A error occurred during deletion of the fields STOPG and/orSTOPD in table VVKKVTRG within the area stated with one or moredata records.

Procedure
Check in the area stated whether there are data records in tableVVKKVTRG containing values in the fields STOPG or STOPD.
If there are entries for these data records in table DFKKLOCKS, deletethe fields STOPG and STOPD.