SAP Message RSDD003 - Activation of aggregate & was canceled (next table name)

Diagnosis
For each aggregate, separate tables are created in the ABAP Dictionary a
nd in the database. All table names beginning with &V2& are reserved forthese tables.
The tables that are already used are managed in the catalog for the aggr
egates (table RSDDAGGLGT). The next free table name that was determinedin accordance with this administration table was table name &V3&.However, an active table with this name already exists in the ABAPDictionary. Active tables are not overwritten automatically.

System Response
You cannot activate any further aggregates.

Procedure
Eliminate the inconsistency in the catalog. To do this, delete tables th
at are no longer in the management catalog.
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RSDD003; the problem may already be documented.
Write a customer message. Include the long text of this problem messageand describe the changes made to the aggregates that resulted in this er
ror.