VMware NSX-T Data Center
This occurs when there is a quota set for a specified resource type and the maximum resource count has been reached. See Adding Quotas to an NSX Project in the online documentation.
You must, either, delete unwanted or unused resources of the type to get under the quota limit or increase the quota limit for the specified resource.
Alternatively, you could remove the imposed quotas if they are no longer needed.
To delete the quota or change the limit, using the following procedure:
Refer to Adding Quotas to an NSX Project in the online documentation for more information.
Quotas can be managed via API, if necessary, using the infra/policy/contraints API calls.