Clients are unable to update policy number on SEPM

Hi,

I have multiple groups in which 3 or 4 among 10 have the same policy number as per SEPM and the others do not have the same policy number as per SEPM and they are unable to take update from the GUP.

I believe since the clients are not able to update policy the client is unable to take update from SEPM.

Troubleshooting done:

- Created a New group and moved the clients to it still the same issue( Policy is not udpated on SEP)

- Manually deleted serdef.dat and .bak still the same issue( Policy is not udpated on SEP)

- Ran a repair on those clients still the same

Need your assistance.