victim means ? is it supplier/site name ?
Yes, it's victim supplier and sites.
Can you just put the supplier on hold? That may stop requisitions for them from being approved without using a personalization.
One alternate is to make the Purchasing Flag OFF on Supplier Site level in Supplier Master.
no, that modification we can't do. we can create form personalization only.
You can try with follwoing persoanlization step with particular supplier.
You have to set your suggested vendore_id and vendor_site_id.
Trigger Event : WHEN-VALIDATE-RECORD
Trigger Object : LINES
:LINES.SUGGESTED_VENDOR_ID = 2263 AND :LINES.SUGGESTED_VENDOR_SITE_ID = 2284
Seq : 10
Type : Message
Message Type : Error
Message Text : Restricted Supplier
Can you explain the reason for insisting only persoanlization ?