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

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

SAP S/4HANA Cloud Public Edition

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, Account does not exist in chart of accounts YCOA, SAP S/4HANA Cloud Public Edition. , KBA , CA-CPD-SS , S/4HANA Public Cloud – Professional Service Projects , Problem