Move transactions to the correct vendor

1. Void the invoices when no related transactions exist, or create credit memos and apply them to the invoices.
2. Enter the invoices using the Vendor ID you want to keep.
3. Verify the invoices and balances under the correct vendor.

Rename the duplicate Vendor ID

1. Rename the original vendor ID to prevent users from selecting it for future transactions.
2. Use a recognizable prefix to identify the record as inactive. For example, PaperSupply to ZZPaperSupply.