We have made all the settings necessary to receive a sales order via EDI. When testing IDOC processing, we create an order however the availability check is not executed. We can open the order in VA02 and manually execute the availability check. We have reviewed SAP notes. One note describes our problem and states that the material is locked by parallel processes. We are not running any parallel processes. We are simply testing the IDOC processing step with transaction WE19. I've opened a customer message, but I was hoping someone could point me in the right direction. Interestingly, if we do not pass the incoterms our schedule lines are confirmed. Any suggestions?