Oracle Integration REST HTTP/1.1 500 Internal Server Error

Developing new cloud interfaces you will often get the HTTP/1.1 500 Internal Server Error. And the error details sometimes gives you the root cause for the error. Like example -

Error Creating Supplier :HTTP/1.1 500 Internal Server Error:
env:Server<Supplier WebServiceOperation="createSupplier" Supplier="New Supplier" SupplierNumber="12345" SupplierId="">
<SupplierAddresses Operation="CREATE" AddressId="" AddressName="ADD123">
<Rejection>The address is not valid. At least one of the address attributes failed validation. Review the address format and geography setup for more details.</Rejection>
</SupplierAddresses>

But in many cases it does not give you a detailed error message. In that case most likely the error is with the incorrect xml tags being used in the payload.

Example from supplier site payload -

True/sup:PayPurposeFlag>

If you notice carefully < was missing after the value(True). So check the payload carefully and ensure you are using the correct tags.

So the below tag might also cause the same error. (sup: is missing from the tags)
True/


Happy Integrating.