Cannot update a skeleton svg using labels_api.partial_update, Task.update, or via UI

[matt-deboer]

Actions before raising this issue

• I searched the existing issues and did not find anything similar.
• I read/searched the docs

Steps to Reproduce

1. Using the python sdk, create a task using the high level api (client.tasks.create_from_data), creating a label of type skeleton, but with empty svg value (since I cannot find how to properly create an svg without knowing the ids of the sub-labels which have not yet been created).
2. After the task is created, build an appropriate 'svg' value and attempt to update it with the high level api or the low level labels_api.
3. Notice that the update is successful, but the 'svg' value is ignored

Also note that updates applied in the GUI work the same way (update 'success' but no changes applied).

Expected Behavior

The svg value should be updated, or at least an error thrown indicating that the value is not valid for update.

Possible Solution

Fix code to validate and update the value, or at least mark the 'svg' field as non-updatable.
Specifically, in cvat/apps/engine/serializers.py, in the case where a label is being updated, there is no corresponding logic to deal with a skeleton type.

Context

No response

Environment

No response

[zhiltsov-max]

Hi, skeleton label points cannot be edited after a label is declared, it's not supported. I agree that an explanatory error message should be issued in such cases.

[MSDEV0630]

Hello, Has this issue been resolved? I would like to resolve this issue if it has not been I would like to take this task on. Please let me know.