SAP Message 28123 - Formal parameter &1 in table/function &2 is restrictable

Diagnosis
The formal parameters which are used in tables/functions and areaccessed in object dependencies must all be single-valuecharacteristics. However, formal parameter &V1& for table/function &V2&is restrictable.

Procedure
Formal parameter &V1& for table/function &V2& cannot be used inobject dependencies. Correct your entry accordingly.