Why are supplier details editable in one instance not in another instance

Summary:

When navigating to Supplier details in Procurement through the hyperlink in manage suppliers.
In Test Instance:
Supplier details page is opened in read-only mode.

In Dev Instance:
Supplier details page is opened in editable mode.

What could be the reason for this.

PS: I am trying to show DFF in bank details page in bank accounts tab under payments in supplier details. In dev instance, it is visible in dev instance where it is in editable mode but not visible in test instance where supplier details page is in read-only mode.

Regards,
Satya