SAP Message VK20026 - Program error: Item without header (GUID &1, POSNR = &2)

Diagnosis
A program error has occurred when processing coinsurance shares, whichcan lead to inconsistencies in the system: An attempt was made toprocess an entry in the VVKK_COINSP table, but the system had notselected a corresponding entry in the VVKK_COINSH table. This is anentry where GUID = &V1& and POSNR = &V2&.

System Response
Processing was cancelled.,,

Procedure
Enter an OSS message for SAP, and specify the data for this run.