SAP Message AP160 - Assignment to the same program in different approval years

Diagnosis
You tried to make an assignment to a program position of investmentprogram &V1&/&V2&. There is already an existing assignment to programV1/v3.
Assignment to program positions of a program definition in more thanone approval year is not allowed, however. These assignments can onlybe created by the fiscal year change function.

System Response
The entry is rejected.

Procedure
Check your entry.