Tutorials: https://developers.sap.com/tutorials/abap-s4hanacloud-procurement-purchasereq-shop.html
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Hi,
I followed the tutorial above but experienced problem to test the app.
When I tested the function to post new purchase requisition, system returns this error "Unspecified provider error occurred. See Error Context and Call Stack." as shown below.

I developed the objects in S4HANA Cloud but I am not sure why this tutorial does not work in our Customizing tenant where data is available for testing. Is there any pre-requisite for using BOI in S4/HANA Cloud that we should be aware of?
Below is what we captured from oData service message monitoring:
