3540455 - Error Message: Party type Organizational Unit not valid

When user tries to create a project invoice request, it is triggered an error message in the system. 

SAP Business ByDesign

1. Go to Customer Invoicing work center.
2. Go to Sales Orders view.
3. Search for ABC (ABC is the Sales Order's ID). 
4. Click in New button and select Manual Project Invoice Request. 
5. Click in Next button. 
6. Change the Bill-To from OPQ to JKL (OPQ is the Bill-To value picked by the system and JKL is the Bill-To value to be added). 
7. It is triggered the error message:

- Party type Organizational Unit not valid

Even though JKL and OPQ may be both Business Partners, in the backend it is only maintained one party type code. 

JKL has both Account and Supplier roles maintained. However, in the backend, JKL has its party type code as Organizational Unit. An Organizational Unit cannot be used as Bill-To in a Project Invoice Request. 

Because OPQ is only a Business Partner (only has Account role), the system accepts OPQ as a Bill-To in the Project Invoice Request document. 

System is working as designed. Organizational Units cannot be maintained as Bill-To in the Project Invoice Request document. 

KBA , SRD-PRO-INV , Projects Customer Invoicing , How To