DocuSign API update envelope notification settings - php

Question

I am using the PHP SDK. I created a user account under my admin account. I use "send on behalf of" to send envelopes from the user account. I am able to check the status of and download completed envelope documents and tab data with the master account, but I am unable to update the envelope notification settings from the master account.
The error I get is:
"errorCode": "USER_LACKS_PERMISSIONS",
"message": "This user lacks sufficient permissions to access this resource."
Am I unable to update the notification settings on behalf of another user through the API? Here is the relevant code snippet:
$envelopeApi = new DocuSign\eSign\Api\EnvelopesApi($apiClient);
$expirations = new DocuSign\eSign\Model\Expirations();
$expirations->setExpireAfter('120');
$expirations->setExpireEnabled('true');
$expirations->setExpireWarn('0');
$reminders = new DocuSign\eSign\Model\Reminders();
$reminders->setReminderDelay('5');
$reminders->setReminderEnabled('true');
$reminders->setReminderFrequency('5');
$envelope_notification_request = new DocuSign\eSign\Model\EnvelopeNotificationRequest();
$envelope_notification_request->setReminders($reminders);
$envelope_notification_request->setExpirations($expirations);
$envelope_notification_request->setUseAccountDefaults('true');
$envelopeApi->updateNotificationSettings($accountId, $id,
$envelope_notification_request);
This is when I get an error. I have tried using SendOnBehalfOf in the headers and without, with no change in results. Does anyone know if it is simply not possible to update the notification settings on behalf of another user with the API?
Thank you

Answer 1

OAuth JWT Grant is the recommended authentication technique instead of the old SOBO system. See https://github.com/docusign/eg-01-php-jwt for an example of how to do this.
That probably isn't the issue but can only help.
The best would be to set the notification parameters when you create the envelope.
Another possibility: when you try to set the notification parameters are you sure that the envelope is not complete?
Next idea: use the API Logging system to see exactly what was sent to DocuSign. Check it against the API reference page for that call as a check that the call is being made correctly.
Finally, I don't understand why you're requesting the account defaults and also trying to set the notification parameters. Wouldn't it be one or the other?