Diagnosis
The system status TECO (technicallycompleted) is set for the order. The associated date in the orderheader, however, was not set due to an error in the program that setthe status TECO.

System Response
The function cannot be executed because the system cannot determine theperiod of technical completion.

Procedure
Notify your system administrator or the SAP Hotline.
If necesssary, repeat the calculation ofWIP orvariances when the date of technicalcompletion has been corrected in the order header.