SAP Message AP207 - An assignment already exists

Diagnosis
You want to assign a measure or an appropriation request (100%) to aprogram position.
There is already an existing assignment to program position &V1&/&V2&/
V3.

System Response
Another 100% assignment of the measure or appropriation request istherefore not possible.

Procedure
If you want to assign a measure or appropriation request to severalinvestment program positions, you have to make multiple assignmentsbroken down by percentages. However, this type of assignment is onlypossible from master data maintenance for the measure or appropriationrequest, and only if the budget distribution indicator is not set inany of the program positions involved.