Hello,
I have requirement where I have to get data(for lov's) from Oracle Transportation Management(OTM) Instance Using REST API(GET), Then develop a form to create Orders. Once, Order details is entered and clicked on ‘Create’ It sould be Posted in OTM Instance.
I have fallowed https://docs.oracle.com/en/cloud/saas/transportation/23c/otmra/op-orderreleases-orderreleasegid-get.html, got OTM Instance API and Configured this API with APEX 'Rest Data Source'. It looks as below

Then, I have created form on OTM Instance API(APEX Rest Data Source) and trying to create ‘Order’. Then, I got this issue

Someone could you please let me know the exact configuration steps or else can you help me in resolving this issue??
Thanks in advance
Sridhar