Data are shown in RSA3 but are blank in PSA

Hi experts,

We have a Z extractor based on a custom function that return records correctly in t-code RSA3.

But in PSA some fields are blank.

This does not occur with all records, but in just a few

Example, in RSA3 my selection return 4356 records, in PSA the same selection return 4580 records.

many of these records are correctly filled in all fields. But many records are blank.

- Already we replicated and migrated the extractor.

- We already checked the hidden fields.

- Already granted permission for ALEREMOTE user.

We suspect that the problem may lie in how the BW break records in packages in the PSA.

The first package, apparently has the correct data, the other packages have failure.

When we were pulling fewer records, it all within the same package, the data is correct.

If we extract only a specific record, also works.

Can you suggest a solution?

Thanks in advance,

Karine