CA PPM: XOG to add Tasks to a Project fails

Document ID : KB000112105
Last Modified Date : 24/08/2018
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Question:
CA PPM: XOG to add Tasks to a Project fails. Issue is intermittent.

app-ca log shows: 

ERROR 2018-08-20 12:00:15,748 [http-nio-14001-exec-7] niku.xql2 (clarity:username.lastname@ca.com:15543523__66F44B56-568E-41BA-A885-D788D06CA42A:XOG::project::write) Failure while evaluating "xogprojectapi($INITIALIZE,srcRecord.projectID,$login_user)" in expression "{xogprojectapi($INITIALIZE,srcRecord.projectID,$login_user)}" 
java.lang.Exception: Invalid expression xogprojectapi($INITIALIZE,srcRecord.projectID,$login_user): 100 : projList 
at com.niku.xql2.XQLVisitor.eval(XQLVisitor.java:1134) 
at 

Caused by: java.lang.Exception: 100 : projList 
at com.niku.schedulers.api.XOGProjectAPI.returnErrorMessage(XOGProjectAPI.java:472) 
at 
Answer:
Restarts services fixes the issue.