SAP Message V1312 - Sales document type & is not defined

Diagnosis
Sales document type &V1& is not allowed in combination with the dataentered for sales organization, distribution channel and division.

System Response
You cannot enter a sales document of the sales document type specified.

Procedure
Check the sales document type, sales organization, distributionchannel and division.
If sales organization, distribution channel and division are correct,you can display the possible sales document types by pressing F4.

813662Error message CRM_APO 203 for availability check with R/3