ME59N error "Contract vendor X differs from vendor Y" message number 06 047

Hello,

has anyone of you idea what could be the reason for that we receive every now and then in automatic purchase order run in ME59N an error message for a purchase requsition "Contract vendor X differs from vendor Y"  message number 06 047

Also the purchase requisition in error (red) is displayed in the list under vendor Y  even though agreement is for vendor X. In purchasing request agreement and fixed vendor X are displayed correctly.

The error does not appear  in ME59N if we only select this one single purchase requistion.

Hope for your help and thanks in advance for any contribution.

Br

TS

Message was edited by: Jürgen L