Programs API: Errors

This article outlines error messages that might be issued when calling methods of the Programs API.

Update Program errors

The Update Program method might issue the following error messages:

HTTP status	Error code	Error message	Troubleshooting
FAILED_PRECONDITION (428)	WRONG_STATE	The program is ended or archived and can't be updated.	Refresh the program and avoid editing closed programs.
INVALID_ARGUMENT (400)	WRONG_START_DATE	The requested start date is in the past for the site's timezone.	Ask the owner to choose today or a future date.
INVALID_ARGUMENT (400)	WRONG_PARTICIPANTS_NUMBER	The requested participant limit is lower than the number of active participants.	Raise the limit or remove participants before updating.
FAILED_PRECONDITION (428)	DUPLICATED_SLUG	The requested SEO slug already belongs to another program or conflicts with an existing program ID.	Choose a unique slug and retry.
FAILED_PRECONDITION (428)	TIMELINE_SWITCH_FORBIDDEN	Timeline settings can't be changed while the program has active participants.	Keep the existing timeline or create a new program.

Publish Program errors

The Publish Program method might issue the following error message:

HTTP status	Error code	Error message	Troubleshooting
FAILED_PRECONDITION (428)	INVALID_START_DATE	The program's start date is in the past.	Update the timeline before publishing.

Visibility errors

Read methods might issue the following error message:

HTTP status	Error code	Error message	Troubleshooting
PERMISSION_DENIED (403)	permission_denied	The caller isn't allowed to view the requested program or result set.	Check the caller identity and the program's access settings.