Tracking supplier bank account numbers has several advantages. On the one hand, you can easily access the payment information from your ERP package, eliminating the need to search for the correct payment information when paying invoices. On the other hand, this is also a good protection against phishing: suppose you receive a counterfeit invoice that appears to come from one of your trusted suppliers, by checking the bank account number you will be able to see that it is a different bank account number to which the bill should be paid.

You can read about how to easily track your payment information with a vendor in this help desk article.

For a supplier, there is a section on the detail sheet that mentions "Bank account numbers".

You can enter one or more bank account numbers here, possibly with a comment attached. You can also specify which bank account number should be used by default.

Then this section is still hidden. To do this, go to the Suppliers settings, and via Fields and Sections, make the 'Bank account numbers' section visible.

If you synchronize with Exact Online, the set up bank account numbers will also be transferred to Exact Online and thus remain up-to-date in Exact Online. This is especially useful if you make payments directly from your accounting package as you will automatically have the correct payment information there too.

Other accounting packages that IAMD. ERP do not currently support to synchronize bank account numbers.