Knowledge Center

The Knowledge Center assists customers with usage of DCSA-managed industrial/personnel security-related systems/applications including National Industrial Security Program (NISP) Central Access Information Security System (NCAISS), National Industrial Security System (NISS), NISP Enterprise Mission Assurance Support Service (eMASS), and Office of Designated Approving Authority (ODAA) Business Management System (OBMS). The Knowledge Center also provides Electronic Questionnaires for Investigations Processing (e-QIP) user support (for Industry e-QIP initiated via Vetting Risk Operations ) and responds to inquiries regarding personnel or facility security clearances.

The DCSA Knowledge Center assists customers with usage of industrial/personnel security-related systems/applications. The Knowledge Center is closed on weekends and all federal holidays.

Toll-Free: (888) 282-7682


Menu options:

1 - Phone support for Personnel Security Clearance Inquiries to include e-QIP are closed until further notice. For assistance with Industry Pin Resets: HANG UP and Call the Applicant Knowledge Center at 724-738-5090, or; Email and for all other PCL related inquiries, please email the Personnel Security Clearance Questions Mailbox at
2 - Account Lockouts and Passwords - 8 a.m. to 6 p.m. Eastern Time
3 - Facility Clearance Inquiries - 8 a.m. to 5 p.m. Eastern Time
4 - OBMS
5 - CDSE - 8 a.m. - 4 p.m. Eastern Time


Mailing Address

OCIO - Knowledge Center
Russell-Knox Building
27130 Telegraph Road
Quantico, Virginia 22134