How to add transaction business units in create receipt "Add Open Receivables"

Summary:

Add or configure the list of Business Units under the ledger to appear in the "Transaction Business Unit" dropdown on the "Add Open Receivables" page:
Currently we have 2 BU's are added, Now the business wants to add more BU's in ransaction business units in create receipt "Add Open Receivables"

Please find the attached screenshot.

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