MIRO : Make Partner Bank on Payment MANDATORY

Hello Experts,

My requirement is to make the field “Partner Bank Type” (under “Payment”) - INVFO-BVTYP mandatory in transaction MIRO, if in the "Basic Data" tab, the user selects currency (INVFO-WAERS) other than 'EUR', for e.g. 'USD' etc.

My findings:

1. Include LFDCBFC0

2. Customer Exit EXIT_SAPLMRMP_010 in Enhancement LMR1M001 using SMOD

3. BADI INVOICE_UPDATE

Let me know which is the best way i can achieve this and how.

Thanks in advance.

Rajat