Batch number not appearing in OIBT

Dear Experts,

I am facing a problem concerning a Receipt from production. In fact, I have a query running in order to print label. In this query I take the batch number on OIBT table, (link to IGN1 through Baseentry, BaselinNum and BaseType)

There is one case where there is no information on OIBT for the document whereas there is a Batch number assigned to the production receipt (see screen shots ).

What can explain this situation ?

Thank you for your help.

best regards

Sébastien TABORE