Insufficient user types Your organization does not have enough user types available to invite members

Error Message

Attempts to invite members to an organization fail, and return the following error message:

Error:   
Insufficient user types 
Your organization does not have enough user types available to invite members.

Cause

The following are possible causes for the issue:

• There are no more user types available in the organization.
• The existing cache in the browser is disrupting the invitation process.
• The user types are temporarily unavailable after deleting previous members owning the organization seats.
• The user type assigned to the invited member is incompatible with the available user type in the organization.

Solution or Workaround

Depending on the cause, choose one of the options below to resolve the issue.

There are no more user types available in the organization

1. Check the user type availability in the organization.
   1. Log in as an administrator of the ArcGIS Online organization.
   2. Navigate to Organization > Licenses > User types.
   3. Under User types, check for available seats in the organization.
2. If all the user types display 0 available, contact an Esri Customer Service Representative to purchase more user types for the organization.

The existing cache in the browser is disrupting the invitation process

1. Clear the browser's cache.
2. Refresh the ArcGIS Online organization page.

Note:
Alternatively, use a different browser to invite members to the organization.

The user types are temporarily unavailable after deleting previous members owning the organization seats

Wait for a few hours until the user types become available again, and invite the members to the organization.

The user type assigned to the invited member is incompatible with the available user type in the organization

Assign a compatible user type when inviting the member to the organization. For example, if Viewer is the only available user type left, assign Viewer as the member's user type.