3344905 - Error 'Enter a cross-company code sales document' returns by app Generate Intercompany Billing Request - SAP S/4HANA Cloud Public Edition

If the Fiori app "Generate Intercompany Billing Request" fails to create Intercompany Billing as anticipated, and the error message 'Enter a cross-company code sales document' appears.

SAP S/4HANA Cloud Public Edition

This error can be attributed to several factors.
Here are 2 reasons we have identified:

1. Missing or incorrect configuration in configuration activity 'Define Internal Customer Number By Sales Organization'.
2. The ordering service organization and delivery service organization are identical in the customer project.

Reason 1:
Assign Cust.Inter-Co.Bill  Sales Org. in the configuration activity.
Refer to 5.1 Define Internal Customer Number By Sales Organization - Setting Up Intercompany Billing for Cross-Company Cost Accounting Postings (4AN).

Reason 2:
For intercompany delivery, ensure that you specify an ordering service organization under the 'Information' tab and a different delivery service organization in the work package staffing within the "Plan Customer Projects" app.

• Setting Up Intercompany Billing for Cross-Company Cost Accounting Postings (4AN)

DPICB 004, Intercompany Billing Request, cross-company, Enter a cross-company code sales document, generate intercompany billing request , KBA , SD-BIL-IV-IB-2CL , Intercompany Billing (Public Cloud) , PS-ST-2CL , Please use PPM-SCL* , PPM-SCL-BIL-FIO , Fiori UI for Project Billing (Public Cloud) , Problem