SAP Message AH060 - Not permissible to set the "No prorat." indicator

Diagnosis
You wish to set the indicator that suppresses prorations for anoperand. That is not permissible in this configuration sinceinconsistent time slices could result from the operand update.
In this configuration, control of the disconnection period ispermissible for the variant, and determination of time portions isrequired for the current operand. In this specific case, no prorationsof the operand may be suppressed.

Procedure
Cancel the indicator.