SAP Message X4003 - Operation &1 cannot be found in order &2

Diagnosis
An attempt was made to find operation &V1& in order &V2&.

System Response
The operation could not be found in order &V2&. The search was carriedout via plan keys.

Procedure for System Administration
Further information:
Transferred operation number: &V1&
Transferred plan number (PLNNR): &V3&
Transferred plan node (PLNKN): &V4&