Users need connection object permissions to generate and run workflows.
Work with the Informatica administrator to assign the read and execute permissions to users that run workflows requiring the connection object. Assign write permissions to users that have the privilege to manage connections in the Test Data Manager.
Alternatively, the Informatica administrator can specify a default set of permissions for connection objects in the Workflow Manager. If enhanced security is enabled in the Workflow Manager, the Workflow Manager assigns the default permissions to users and user groups.