Where can I find information on the functionality/purpose of supplier fields "Alternate Supplier Nam

We have an issue with a new bank that does positive payee verification.  Suppliers where "address line 1" is a name are rejecting and we are looking for an alternate location for the name for vendors where there is a second payee (example 1 below) or vendors who have requested that a specific name be included on the check (example 2 below).  We would like to know what purpose  the "Alternate Supplier" or "Parent Supplier" fields serve.

Example 1:

Remit to:

Tom Jones

Melissa Jones

2400 S Lindbergh

St. Louis, MO  63128

Example 2:

Remit to:

Bauer Plumbing Supplies

Bob Bauer

1400 Lemay Ferry Rd

St. Louis, MO  63129