SAP Message WB021 - Maximum version no. for customer &1 and assortment list &2 is exceeded

Diagnosis
The highest version number for new assortment lists for customer &v1&assortment list type &v2& has been exceeded.

System Response
The system cannot create the new version.

Procedure
Delete old versions of the assortment list so that the system can startnumbering versions from the beginning again.