Internal number assignment not defined (please enter number)
I am doing 3rd party process ... i had done all the necessary transactions.... when i am creating a Sales Order .. wheli entering Material :Internal number assignment not defined (please enter number) this is the error i am getting.. i am unable get out from this kindly help me out and do the needful.please find the below error of performance assistant.
Message no. 06243
The system cannot assign a number because internal number assignment has not been defined in this case.
Enter a number that lies within the valid number range for the document.