Reducing data retention (Aux copy)

Hi all,

I start on this community, so thanks about all help you can give me.

Near 2 years ago, we make a mis configuration on our infrastucture.

Result : We have datas on Tape, which have bad data retention date.

When I modify the retention date of jobs, I have 2 different behaviors :

• When I increase retention date : COMMVAULT show the right date
• When I reduce retention date : COMMVAULT don’t make any changes

Why ?

How can I expect that datas expire at the right date ?

My COMMServe is in 11.24.21

Thanks in advance