2710172 - Unable to change project to stage from Contract Preparation to In Execution

When trying to change a project from stage Contract Preparation to In Execution, you get the error Account does not exist in chart of accounts YCOA.

 SAP S/4 HANA Cloud.

1.  Open Plan customer projects app.
2.  Select a project in Contract Preparation stage and click edit.
3.  In Information tab, change the stage to In Execution. 

A maintained expense in a workpackage does not have the G/L account mapped.

1. Select Manage your solution app.
2. Select Configure your solution.
3. In the search bar, search for  Define resources.
4. Map the G/L account for the expenses.

Expenses, Define resources, Plan customer projects, In Execution, Contract Preparation, YCOA, workpackage, G/L account , KBA , CA-CPD-SS , S/4HANA Professional Services Cloud - CPM , Problem