Credential Permissions
When creating a Specific user credential or a General user credential, you can set permissions for who is authorized to use it: a single user, a list of specific users, a predefined group, or everyone.
When you are developing a wizard in Studio, you can select to include any credential in the wizard (whether or not you are authorized to use it). However, you can successfully run wizards only with credentials for which you are authorized.
At runtime, if the user running the wizard is not authorized to utilize a required credential, the wizard will fail.
By default, a credential can be used by everyone
If a permissions level has not been set for a credential, that credential can be utilized by all Nintex users in your organization.
Permissions level is fixed
Once a permissions level has been set for a credential, it cannot be modified. In order to change an existing credential's permissions, you must delete it and recreate it with the desired level.
For more information about setting a permissions level, see Creating Credentials: