If this is moodle response :HTTP/1.1 200 OK
Content-Type: application/json

{
"errorcode": "missingparam",
"message": "A required parameter is missing."
}
This will still return elif error_code:

raise MoodleClientError(
    'Moodle API Client Task "{method}" failed with error code '
    '"{code}" and message: "{msg}" '.format(...),
    response.status_code,  # ( This is will return 200 status code)!
    moodle_error={'error_code': error_code, ...}
)

You can have a function like to correct the status
def _effective_error_status_code(status_code, error_code=None):
"""Map Moodle error codes or convert false-200s to failure statuses"""
if error_code and error_code in MOODLE_ERROR_STATUS_MAP:
return MOODLE_ERROR_STATUS_MAP[error_code]
if status_code is None or status_code < 400:
return 555 # Semantic error
return status_code

elif error_code:
status_code = _effective_error_status_code(response.status_code, error_code)
raise MoodleClientError(..., status_code, moodle_error={...}) u can call the function to change the status code

Please look into this https://2u-internal.atlassian.net/wiki/spaces/SOL/pages/edit-v2/1081409695?draftShareId=33d153f3-4beb-45a9-a403-aee6f781e5e1
MOODLE_ERROR_STATUS_MAP = {
# Duplicate/Conflict errors
"shortnametaken": 409,
"courseidnumbertaken": 409,
"morethanonerecordinfetch": 409,
# Not Found errors
"cannotfindcourse": 404,
"cannotfinduser": 404,
"invalidrecord": 404,
"usernamenotfound": 404,
# Bad Request errors
"missingparam": 400,
"codingerror": 400,
# Authentication/Authorization errors
"invalidlogin": 401,
"invalidtoken": 401,
"accessexception": 403,
"errorcatcontextnotvalid": 403,
"usernotfullysetup": 403,
# Server/Database errors
"dbconnectionfailed": 503,
"dmlreadexception": 503,
}Needs to be handled.