This behaviour is observed in NCM 10.1.x GUI when System Administration -> Global -> Credentials Manager -> Credentials Configuration -> Scheduled->Prompt User configuration is chosen/implemented in the application.
![Job Credentials Input-A.png](https://api-broadcomcms-software.wolkenservicedesk.com/attachment/get_attachment_content?uniqueFileId=1512263207910)
To resolve the reported behaviour and avoid Job Credentials Input pop up window cropping up during scheduling of jobs (test credential or any other job type), users are recommended to navigate to System Administration -> Global -> Credentials Manager -> Credentials Configuration -> Scheduled tab and change current "Prompt User" configuration to "Use Static Device Assignment".