When opening a master project from PPM to Microsoft Project (MSP), a popup window opens looking for the file in the MSP Bin folder. Example of the file path that launches in the window: "Program Files (x86) -> CA -> PPM - CA PPM MSP Interface -> Bin". A message at the top of the window states "Cannot find inserted project - <Project Name>". When you click 'Cancel' to the message it takes you to a mpp file with just the list of the sub projects, but not tasks for the project.
This is due to a problem with one of the sub projects of the master project.
1. Check to make sure each of the sub projects can be opened from PPM to MSP. If any of the sub projects have child projects of their own, then also check those sub projects to make sure they open successfully.
One known issue with sub projects that causes this issue with a master project is if either the Standard calendar or a team member's calendar is 51 characters or longer. If this is the cause, you will see the following error when attempting to open that sub project in MSP: "An Import error occurred. The element in the element with = <ID#> has invalid data. The calendar name does not exist. Click a calendar in the list, and then press Enter". Reference TEC1532415 for more information on this issue.
2. If all of the sub projects open successfully, see if removing all the sub projects from the master project, then adding them back to the master project resolves the issue.
Reference TEC1532415 - In the MSP New Driver, Unable to open a project in MSP if a Calendar associated with the project has more than 51 characters