Diagnosis
The invoicing unit for the selected account &v1& could not be created,because the internal validations could not find any invoicable billingdocuments (automatic or manual).
This could be due to one of the following reasons:

• Only a manual billing document exists for the contract account to
invoice, and it may not be invoiced by itself. No leading automaticbilling document exists.

• More than one required contract exists for the contract account to
invoice. However, not all the periodic billing, interim billing, orfinal billing documents are available for all the required contracts.

System Response
The contract account was not invoiced.

Procedure
Check the billing documents for the contract account that have not beenposted.


• If no leading automatic billing document exists, make sure that the
existing manual billing document is not invoiced until at least oneadditional, automatic billing document exists for the correspondingcontract account.

• If more than one required contract exists for the corresponding
contract account, make sure that at least one automatic billingdocument is available for all of the required contracts that belong tothe corresponding contract account.