Hi All,
I am trying to pass set of string parameters + blob file dataset to API so the content can be saved/post to external system.
Everything works and I get success response back but when I pass the string parameters together with blob data of file it doesn’t work.
below is the code works correctly with set of varchar parameters but when i add actual blob file value instead of hardcoded string line#30 to the payload it doesn't work - where do you think i am going wrong? your help is appreciated:

Using Apex 24.2x and Oracle DB 19c but I am writing the above function in the db.
Thank you in advance.