Vendor Material Number in vendor master.

Hi Friends,

We have 2 purchase order for same info records.

1 was raised on 08.10.2014 which have correct vendor material number.

Another purhase order raised on 09.10.2014 has wrong vendor material number. It seems there is a change in vendor material number for infor racord in between 08.10.2014 to 09.10.2014. But we are not getting any changed history. In AUT10 also checked but did not get any change.

Can it be posible that if any program that has updated this vendor material numbe but not created change history log. How can I find such program.

Its very critical issue as suppliers will supply wrong material which inturn will lead to production line stoppage due to shortage.

Thanks,

Kiran