Hello Okta Support Team,

We are encountering a schema enforcement error while programmatically managing Application User Profile custom attributes using the Okta Schema API.

When attempting to add a new custom attribute, the API returns the following error:

{

 "errorCode": "E0000001",

 "errorSummary": "schema contains 1 properties more than the allowed maximum of 150"

}

This occurs consistently when the total number of properties (base + custom) reaches 150 and we attempt to add one additional attribute.

Steps to Reproduce

Retrieve the application user profile schema using:

GET /api/v1/meta/schemas/apps/{appId}/default

Confirm that the total number of properties equals 150

(Base attributes + Custom attributes).

Attempt to add one additional custom attribute using:

POST /api/v1/meta/schemas/apps/{appId}/default

The request fails with "schema contains 1 properties more than the allowed maximum of 150"

Expected Behavior:

Either: Documentation confirming the enforced limit, or Confirmation whether this limit is configurable or can be increased.

Actual Behavior:

Attribute creation fails once the schema reaches 150 total properties. No Admin Console or API configuration exists to modify this limit.

Request for Confirmation (Key Questions)

We request written confirmation on the following points for internal governance and documentation purposes:

Is 150 properties a hard-enforced limit for the Application User Profile schema?

Does this limit apply to: Custom attributes only, or Total properties (base + custom)?

Is this limit: Tenant-specific, or Uniform across all Okta tenants?

Is there any supported mechanism (feature flag, support override, plan upgrade) to increase this limit?

Is there official documentation (public or internal) that references this limit?

We need formal confirmation to Document architectural constraints Define attribute governance standards

Align application integration design with Okta limitations

Attachments

API error response screenshot (if applicable)

Schema property count evidence (optional)

Thank you for your assistance. Could you help us to fixing this issue and upgrading the custom attributes limit from 150 to 3000+ user profile attributes.