I want to insert a Sales Order from .NET and i get
A validation exception has occurred. Validation Errors: - Duplicate SalesDocumentKey. If adding or updating lines to an existing document, UpdateIfExists must equal 1
I am not using XML, there you can set this flag simple, i am creating a customer but i dont have this flag as a property. And i dont know where to set it.
How to change this flas value?
Thanks!
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