2919044 - Error While Maintaining Employee Times in Time Administration

You are maintaining the Employee Times in Time Administration work center. But unable to save the times for Service Confirmation due to the error:

Specified activity not permitted for working time confirmations
Service confirmation quantity for Sales Order xxxxx missing

(where xxxxx represents the Sales Order ID)

SAP Business ByDesign

Time, Duration, Service Product, Sales Order, Labor Information, Time Recording, Time Administration, Sales Order Confirmation, Service confirmation, Employee Times, UoM, Unit of Measure , KBA , duration , service product , sales order , time , time administration , sales order confirmation , time recording , labor information , service confirmation , uom , employee times , unit of measure , SRD-HR-TLM , Time and Labour Management , Problem