SAP Message RSDD439 - '&1': Aggregate has a variable key date. Activate process chain '&2'.

Diagnosis
The aggregate "&V1&" contains a time-dependent component. The key dateis a variable.
The aggregate can be used to execute a query only if the key date ofthe aggregate matches the key date of the query.
When filling theaggregate, the variable for the key date is evaluated. This remainsconstant until the process "&V2&" adjusts the aggregate to a new keydate.

Procedure
The process chain "&V3&" already contains, for example, the process "
V2". activate this process chain or another one that already exists.Otherwise, you could create a new process chain in transaction RSPC.