Mass transport issue

Hi All,

Need help to understand the mass transport concept.

Say mass transport is running with 100 transport requests. Only 97 out of them got transported to target system. How i can confirm what went wrong apart from checking below:

1. Checking tp system logs from SAP

2. transport logs

3. tp program at OS level and RDDIMPDP job in SAP

4. Checking requests those are transported in target system against one those are in source.

Thanks and Regards,

Deepak