(Migrated from https://github.com/syndesisio/syndesis/issues/5019)

Author: Andrej Smigala
Assignees: unassigned

This is a...

[pre][code]
[ ] Feature request
[ ] Regression (a behavior that used to work and stopped working in a new release)
[x] Bug report [!-- Please search GitHub for a similar issue or PR before submitting --]
[ ] Documentation issue or request
[/code][/pre]

Description

In an API Provider integration, after changing the return type of an operation that's already implemented, trying to update the data mapping causes the following error:
``

Data Mapper UI Initialization Error: Could not load document 'i-LaUfMv856-V-nkQhsB7z': undefined undefined 

``
!image

Steps to reproduce:

1. create an API Provider integration with a flow that requires a data mapping
1. edit the operation so that the data mapping would not be valid (e.g. change the return type)
1. save the API definition
1. open the appropriate flow, notice a warning badge on the result
1. open the data mapper to change the mapping, the above error is shown