Hi
you have to check all the errors in BD87 in srm system .
there are many examples
1. Region Code may not be sync with HCM to SRM
2. BP may not be created in SRM for User
3. employee may be detach in SRM Org.
4.Many personal data are mandatory IT1,It2,IT6 subtype 1,IT105
5.DOB valid
6.gender data
7. position changes in HCM and this changes may not be available in SRM
yo need to do detail analysis of all failure and sort out all the issues
Muthu