Diagnosis
A customer-specific detail screen has been defined, to be displayedwhen displaying documents.
This detail screen was integrated in the standard screen prior toRelease 4.51.
As of Release 4.51, this detail screen was included as a truesubscreen, meaning you need to manage your own fields (using the threefunction modules listed below).
These customer-specific modules cannot be automatically generated.

• The program defined must be a function group.


• The screen defined must contain the attribute 'Subscreen'.

This function group must contain the following three function modules:

• An INIT function module


• A PBO function module


• A PAI function module

These function modules can be copied and adapted from sample functionmodules. These customer modules are then entered in the table formanaging detail screens (In the Implementation Guide for ContractAccounting under Basic Functions -> Postings and Documents ->Document -> Screen Preparations -> Include Fields in DetailScreens), transaction SM30/V_TFK021KC.
In this maintenance transaction, the names of the sample functionmodules and information on how to adapt the modules is contained in thefield help for the individual function modules.