Diagnosis
One of the following situations triggered this message:

• You want to maintain an object for links to a document type and have
entered a screen for which no screen source is maintained.

• You are defining a document type and in field AltSc you entered
the number of a screen for which no screen source is maintained.

Procedure
Check your entry.
If a new screen needs to be created, note the following points:


• The processing logic for the new screen must follow the logic of screen
0101 in program SAPLCV00.

• A program must be created in which the PBO and PAI form routines are
processed at the required time.

• The name of the program is communicated to the system via a setting in
the IMG for document managemement (Define document types) in fieldAScEx..