Cannot change status of test execution

Hi, 

We are trying to, pramamaticatly, and following the "Zephyr Essential DC REST API" to execute a test and update the status in our JIRA DC, but we are not able to do it. This is what we did:

https://support.smartbear.com/zephyr-essential-dc/docs/en/zephyr-squad-server-rest-api.html

0.- Create a Test JIRA
     issueKey = "TEST-0001"
     issueId = "2944969"

1.- Add steps to a test
     stepID = "1415912"

2.- Create test cycles
     cycleId = "14931"

3.- Add folders to a cycle
     folderId = "33735"

4.- Add tests to a cycle
     executionId = "3392716"

5.- Get test execution properties

{"execution":{"id":3392716,"orderId":3179332,"executionStatus":"4","executionWorkflowStatus":null,"executedOn":"12/Jul/25 8:13 AM","executedOnVal":1752329580000,"executedBy":"xxxxxx","executedByDisplay":"XXXX XXXXX","comment":"","htmlComment":"","cycleId":14931,"cycleName":"Generic PD Test Cycle Saturday","versionId":-1,"versionName":"Unscheduled","projectId":20442,"createdBy":"xxxxx","createdByDisplay":"XXXXX XXXXX","createdByUserName":"xxxxxxx","modifiedBy":"xxxxxx","createdOn":"12/Jul/25 7:58 AM","createdOnVal":1752328680000,"issueId":2944969,"issueKey":"TEST-0001","Feature E Test 2 - Automated","issueDescription":"<p>Test Description<\/p>","label":"","component":"","projectKey":"TEST","canViewIssue":true,"isIssueEstimateNil":true,"isExecutionWorkflowEnabled":true,"isTimeTrackingEnabled":true,"executionDefectCount":0,"stepDefectCount":0,"totalDefectCount":0,"customFields":"{}"}}

6.- Update test step status (Trying with stepId/executionId)
      stepID = "1415912"
      status = "1"

{"error":"Workflow state is completed, data cannot be modified."}

       executionId = "3392716"
      status = "1"

{"generic":"Error executing test. Please correct the input and try again."}

7.- Update test execution status

Id = 205, Status = WaitingForActivation

What are we doing wrong?
Any help would be appreciated.
Francisco