There ae open contracts for material &

What causes this issue?

Open contracts that have items with the same material were
found for the current <GL:sales_and_distribution_document>sales and
distribution document</>.

How to fix this error?

If you wish to know which contracts have positions with the
same material, select the function <LS>Environment</> --> <LS>List</>
--> <LS>Contract</> in the overview screen.

Error message extract from SAP system. Copyright SAP SE.