SAP Message BB077 - Coding block subscreen & could not be generated

Diagnosis
An error occurred while generating subscreen &V1&.

Procedure
If this error occurred during the XPRA phase of an upgrade, continuethe upgrade and correct the error after the upgrade.
Use transaction OXK1 to display thedefinition of subscreen &V1& and determine the cause of the error.

Note
You cannot maintain subscreen 9999 in OXK1. If this subscreencontains errors, execute program RBKNT002 to correct them.
Execute BKNT002