How to verify duplicated value of reference field in MIRO

[SAPSupport]

Dear Expert,

First of all, please aware that we only activate FI module in this system, we do not have MM module. So we're only using MIRO to post some good received of expense/fixed asset purchasing.

Now we're facing this issue that we usually put the Vendor PO number in Reference field.  Due to some data confusion, they might post duplicated goods received into system.

So they require a verify function, system will occure an error in MIRO once they enter a vendor PO that already posted.

Could you suggest us how to do it?

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[SAPSupport · Accepted solution]

Could you please use BADI MRM_CHECK_INVOICE_CLOUD to perform the custom check of Reference field?

You may refer to this online documentation for all available BADIs for supplier invoice:
https://help.sap.com/docs/SAP_S4HANA_CLOUD/0e602d466b99490187fcbb30d1dc897c/5a27c5f57c3f4dffa6881ca5...