SAP Message UPP_PP_K027 - There is no following valid combination

Diagnosis
You have reached the final valid combination of characteristic values.You can only scroll within the characteristic value combinations, whichresult from the current selection criteria in the planning area orplanning level. For this reason you cannot scroll any further.

Procedure
In order to display or enter values for other combinations ofcharacteristic values, change the selection criteria in the context ofthe planning package or planning level.