What was found
RECEIVED CHECK DOORS CABIN DOOR OPEN CAS MESSAGES ON THE GROUND BEFORE FLIGHT RAN QRH PROCEDURE 22A AND MESSAGE CLEARS. THEN AT FL300 CHECK DOORS CABIN DOOR OPEN CAS MESSAGES ILLUMINATED AGAIN. RAN QRH 21C AND LANDED AT PBI. AFTER CONTACTING MX RAN THE QRH 22A PROCEDURE AGAIN AND ALL MESSAGES CLEARED. MX REQUESTED TO LOOK INTO THR DOOR ISSUES. CORRECTIVE ACTION: REMOVED HARNESS ASSY PN: 8250171-1 NSN DUE TO CABIN DOOR OPEN CAS MESSAGE IN FLIGHT AND INSTALLED CUSTOMER SUPPLIED NEW HARNESS ASSY PN: 8250171-1 NSN. PERFORMED SEVERAL OPS CHECKS WITH NO DEFECTS NOTED. CLOSED ALL ACCESS AND PERFORMED SEVERAL MORE OPS CHECKS WITH NO DEFECTS NOTED. MAINTENACE CLEARS SQUAWK. WORK COMPLETED IN REF TO CE700 WDM 52-00-01-04, IPC 52-70-25, AND AMM 52-10-05