Provisioning an unexpected value in attribute Mail of AD

Hello experts,

 

1IM is provisioning the “Mail” attribute of some AD accounts as blank (“”) when this should be Person.CCC_email and we cannot explain why this is happening despite Person.CCC_email being always filled.

We have checked it’s template and nothing explains the empty value… But at some point after a sync project is executed the Mail value of the AD is deleted for some accounts (Not all).

Any help on how we could debug it will be appreciated. The key thing to know would be what is making the ADSAccount.Mail = blank in the first place.

Thanks in advance