Xog failure with error Project Object update failed - NullPointerException

Products

• Clarity PPM On Premise
• Clarity PPM SaaS

Issue/Introduction

We are trying to XOG IN and face the following error. This happens only against one project.

<ErrorInformation>
 <Severity>FATAL</Severity>
 <Description>Project Object update failed</Description>
 <Exception>
  <![CDATA[
java.lang.NullPointerException
]]>
 </Exception>
</ErrorInformation>
</Record>
</Records>
</XOGOutput>

Environment

Version: 15.9.2.

Cause

Cache inconsistency

Resolution

1. We saved the project from the front end by doing a random change
2. Reverted the change that was made
3. Tried XOG IN again, and found that it worked without throwing an error