Error Getting Attachments for a Purchase Order

  • 16 May 2021
  • 1 reply

I’m following the example in Lesson 3.1 of the I310 training course.  But instead of retrieving attachments of a Stock Item, I want the attachments of a Purchase Order.  In Postman, I’m performing a GET to:



The response is: Operation is not valid due to the current state of the object.


This happens for both open and closed purchase orders.   Am I missing something?


1 reply

Userlevel 1

There are two key fields for purchase order.

Type and OrderNbr which one must specify in the uri.  So, it should be:




assuming its type normal purchase order.






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