SAP Message RSDD438 - '&1': Aggregate has a variable key date. Schedule process "&2"

Diagnosis
The aggregate "&V1&" contains a time-dependent component. The key dateis a variable.
The aggregate can be used when executing a query only if the key dateof the 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
Schedule the process "&V2&" in a process chain (transaction RSPC).