Hi @omprakash reddy ,
Thanks for posting in Microsoft Q&A forum.
Agree with EswarKoneti, the data synchronized to the data warehouse database will be stored for three years.
In SCOM, we can change the retention period of the warehouse DB through SQL scripts. But I haven't seen MS say that it is configurable in CM.
For more details about the data warehouse service point for Configuration Manager, please view this article:
https://learn.microsoft.com/en-us/mem/configmgr/core/servers/manage/data-warehouse
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