Hello IFS Community.  

Can anyone point me in the right direction on this error we have?  .’Arguments used to execute current operation are not allowed’

 If the employee tries to book time to a project he gets the error.  If I, as a full IFS user book the same time to the project for the same employee i can do so..  

The employee was able to book time ok, during week 1 but since then not.  I have check the project, resource group etc etc 

Thank you !