How is the corporate card company account determined for new corporate cards? (Visa)

Summary:

My client is going to receive a VCF file daily which will be uploaded to the system. The client has multiple company accounts with the card issuer. When testing we are seeing that new cards are not being associated with the correct company account.

Content (please ensure you mas k any confidential information):

Here is what we are seeing (example)

We have Company account A - Payables business unit A

We have Company account B - Payables business unit B

An employee who works under business unit A has a corporate card in both company A and B. Both cards are showing under company account A.