Third party sales process

Third party sales process as below

1-Sales order is created

2- on reference of sales automatic PR is generated you can check PR in sales order -Item data- Scheduline

3- Third Party PO is generated

4- good receipt through MIGO

5- MIRO posting

6- Customer billing from sales order

in this process if you did not post MIRO(invoice verification) then system will not allow to create customer billing, you can check in used scheduline category in VOV6 where PR type maintained

But in CMS, we allowed customer billing after MIGO