Unable to save project back to Clarity.
Error: Project Save Failed
App-ca.log references related error of "Cannot have assignments" even though assignments were deleted from the summary task as per KB: MSP Save Failed Error Due to Summary Task with Assignment
Release : All Supported Releases
Component : CA PPM SAAS MICROSOFT PROJECT (MSP)
If the above doesn't help, remove the project from the prdocument table then retry any of the steps above if the task is still showing incorrectly as a summary task with assignments. See KB Remove a MSP project from the prdocument table for steps on how to do this and the impact.
If the above doesn't help, see also: