How can I update Jira with Target End Date, End Date and Target Start Date through python?

[Keerthi Pandrapragada]

Here is the code snippet :

def dCalculateDates():
jStartDate = datetime.now()
jEndDate = jStartDate + timedelta(days=jTimeDeltaStartEnd)

jTimeProcess = jStartDate.strftime('%Y-%m-%d')
jStartDate = str(jTimeProcess)
jTargetStartDate = jStartDate

jTimeProcess = jEndDate.strftime('%Y-%m-%d')
jEndDate = str(jTimeProcess)
jTargetEndDate = jEndDate

print(f"{script_info} - jStartDate = {jStartDate} jTargetStartDate = {jTargetStartDate} jEndDate = {jEndDate} jTargetEndDate = {jTargetEndDate}")
return jEndDate, jTargetEndDate, jTargetStartDate, jStartDate

And updating it into Jira as:

json_data_task = {
"fields":{
"project":{
"key": jDWCProjectKey
},
"summary": task_info[0]["summary"],
"description": task_info[0]["description"],
"issuetype":{
"name":"Task"
},

"assignee":{
"name": jASSIGNEE
},
"customfield_10002" : jC20DebugOpens,
"customfield_10009" : jThisTargetStartDate,
"customfield_10010" : jThisTargetEndDate,
"customfield_10021" : jProductL1,
"customfield_10022" : jProductL2,
"customfield_10023" : jProductL3,
"customfield_10024" : jProductL4,
"customfield_11306" : jThisStartDate,
"customfield_13202" : jThisEndDate
},
"update":{
"issuelinks":[
{
"add":{
"type":{
"name":"Blocks",
"inward":"is blocked by",
"outward":"blocks"
},
"outwardIssue":{
"key":jSTORY
}
}
}
]
}
}

The error Iam facing is:

jStartDate = 2024-03-04 jTargetStartDate = 2024-03-04 jEndDate = 2024-03-09 jTargetEndDate = 2024-03-09

task_json_rsp : b'{"errorMessages":[],"errors":{"customfield_10010":"Field \'customfield_10010\' cannot be set. It is not on the appropriate screen, or unknown.","customfield_10009":"Field \'customfield_10009\' cannot be set. It is not on the appropriate screen, or unknown.","customfield_13202":"Field \'customfield_13202\' cannot be set. It is not on the appropriate screen, or unknown."}}'

And According to me the custom_fields in script corresponds to the field itself.And the format of the dates are also upto the mark. 

Could you please help me out with this?

Warm Regards,

Keerthi