39df8a09_Specifications___OpenbravoWiki__Requirement
[Num] 3.5 [Importance] Must have [In scope?] Planned [Requirement] 
The above logic can complete in error in case one of the following conditions are met: The selling organization is not associated to a business partner. The period is closed in the target organization. Some reference data is invalid in the purchasing organization. Under these circumstances, the inter-company order cannot be created. In this case, users should not be able to complete the original sales invoice and should be presented with an appropriate error message.
Intercompanyinvoicing/Functional Specifications - OpenbravoWiki
Requirement