Hi Pascal Erhart,
It is a really wonderful topic. I have followed your steps and all works fine except the IDoc generation. what i am facing now is that i got the Same Message that you displayed before. see below :
I have prepared three files one for project, one for WBS and one for Method.
please see below the files that i have prepared.
Project def :
WBS :
Method :
I put the field Iden (LIDEN) to link the three files together.
Can you please help me what is wrong that cause the above message.
BR,
Mohamed