How to create Lockbox with multiple currencies

Summary:

We have requirement that One Bank account have 5 currencies. so please let us know how to create lockbox with different currencies. Do we need to add currency at the end of lockbox number and request bank to send the file having lockbox number.

Also, when I am trying to load the file, it is giving error like 1 row loaded and 8 Rows not loaded because all WHEN clauses were failed.

How can I check the reason for failure

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