SAP Message BK124 - System cannot determine run schedule for material &/version & on &

Diagnosis
The system could not find a run schedule header on the posting date forthe combination of material &V1&/production version &V2& that youspecified.
This means that more than one run schedule header was created for thiscombination of material/production version in whose runtime the postingdate lies.

System Response
Processing is stopped.

Procedure
Enter another combination of material/production version for which onlyone run schedule header has been created on posting date &V3& orcorrect your entry.