API service for Checklists

Summary:

Hello,

I have checklists that contains multiple tasks. In each task we have a DFF that contains some fields should be filled by the task performer to complete the task. I used the below REST API service:

PATCH

{URL}/hcmRestApi/resources/11.13.18.05/allocatedChecklists/300000035169028/child/allocatedTasks/300000036229199/child/allocatedChecklistTaskFlex

With the below Payload:

{
"AllocatedTaskId": 300000036229199,
"__FLEX_Context": "CLEARANCE_CHECKLIST",
"__FLEX_Context_DisplayValue": "CLEARANCE_CHECKLIST",
"email":"TEST@TEST.COM"}

Knowing I got the link of PATCH request from the response of the below service:

GET

{URL}/hcmRestApi/resources/11.13.18.05/allocatedChecklists/300000035169028/child/allocatedTasks

The response I got from the PATCH request is: Invalid operation update for the specified resource.