MS SQL Express edition (default in PPA) has to be replaced with another MS SQL edition.
Also the DB node has to be connected as native PPA DB node rather then external DB server.
This requirement can be caused by license agreement with software vendor.
It is easy to upgrade the existing instance of MSSQL server having required distribution. Run "setup.exe" from MS SQL distribution and enter "Maintenance" section. Start "Edition upgrade" wizard and follow the instructions. Choose required MSSQL instance on the appropriate screen and finish the upgrade. Now you have PPA with required edition of MSSQL installed.