How to indicate a message by a planning function type in an ABAP-OO-Class

Hello,

I integrated a message with following statement " MESSAGE i003(upf1) WITH v1 v2." in an ABAP-OO-Class, which is used by a Planning Function Type. The function type works but it´s not indecated after executing the Planning Sequence, neither from web template nor in the planning modeller.

Does anybody know this problem/behavior?

Thank for response

Andreas