For each operating unit that uses the internal billing feature of Oracle Projects you must set up internal billing implementation options as either a provider or receiver organization, or both.

To define internal billing implementation options:

1. Navigate to the Implementation Options window and select the Internal Billing tab.

2. If the current operating unit is a provider organization for internal billing, select Provider for Internal Billing.

3. For Supplier Name and Number, enter the name and number of the supplier associated with the current operating unit.

4. Select an invoice numbering method, as shown below:

   To enter invoice numbers manually, Select Manual, and then select Alphanumeric or Numeric Numbering.

   To use invoice numbers generated by the system, Select Automatic, and then specify a starting number to use for internal invoices.

5. For Invoice Batch Source, select PA Internal Invoices.

6. Indicate how you want to reclassify cross charged costs for cost accrual and non-cost accrual projects. Select None if you do not want to reclassify cross charges for either category.

7. Select Receiver for Internal Billing if the current operating unit is a receiver organization for internal billing.

   Use the Cost Accrual Identification extension to identify the project as a cost accrual project. See: Cost Accrual Identification Extension, Oracle Projects APIs, Client Extensions, and Open Interfaces Reference.

8. For Customer Name and Number, enter the name and number of the customer associated with this operating unit.

9. Save your work.