We extend the supplier invoice approval Fiori app few years ago. It has been working fine in Production.
We are going through support pack upgrade now, During testing, we found that the attachment are not opening.
When clicking the attachment, we see that the custom service is being called in the production system.
But in the upgraded system, it is calling the standard TASKPROCESSING service.
Can you point me where to to look in the UI5 code? what cause URL to be different after an upgrade.
Note: the 0 Byte is because of code issue. Not related to my actual issue.