I am getting error while assigning the Network /activity into maintenance order
error 'Rule for allocation of PM order to PS network is not maintained"
Error in brief
"
Rule for allocation of PM order to PS network is not maintained
Message no. IW509
Diagnosis
Assignment of the PM order to an operation of a PS network is not possible.
System Response
You did not maintain the assignment rule for PM orders to operations from PS networks.
Procedure
You maintain the assignment rule in Customizing for the project system, under the heading 'Define parameters for subnetworks'."
i had maintained the setting in given node but still same problem is coming.
pls suggest