Why Fusion and OTBI report gives different Validation Status

In OTBI I use the MATCH_STATUS_FLAG from AP_INVOICE_DISTRIBUTIONS_ALL to get the validation status.

A - Validated

Null - Never / Not Validated

T - Needs Revalidation

Is these correct?

Going to my question, in Fusion, I can see some Invoices which has a Validation Status of Needs Revalidation, but when I extract the same Invoice in OTBI, it gives either A or Null which is supposed to be T.

Is there any reason for that? or any underlying sub status or any other fields to consider?