Cannot see my Approved Reqs in Autocreate : Find Requisition parameter form

Hit a issue when trying to autocreate PO from a approved Requisition. EBS Version is 12.2.4.

I get the error "FRM-40212 : Invalid value for field Requisition_number."

I have got this error in my earlier implementations but was able to fix. In this case i have checked for all the usual places : User-id employee assignment, Buyer setup, Locations, Doc type security/access, correct OU etc.

I am at my wits end and metalink also does not have much info. Whatever 3-4 discussion/notes available, i have already done all that.

Looking for some additional pointers here.

Thanks in advance.