Exhibit 99.1
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COUNTRYWIDE HOME LOANS SERVICING LP

                              OFFICERS' CERTIFICATE
                     ANNUAL STATEMENT OF THE MASTER SERVICER

                                   CWABS, INC.
                    ASSET-BACKED CERTIFICATES, SERIES 2002-S1


     The undersigned do hereby certify that they are each an officer of
Countrywide GP, Inc., general partner of Countrywide Home Loans Servicing LP (a
"Master Servicer"), and do hereby further certify pursuant to Section 3.16 of
the Pooling and Servicing Agreement for the above-captioned Series (the
"Agreement") that:

     (i)  A review of the activities of the Master Servicer during the preceding
     calendar year and of the performance of the Master Servicer under the
     Agreement has been made under our supervision; and

     (ii) To the best of our knowledge, based on such review, the Master
     Servicer has fulfilled all its obligations under the Agreement throughout
     such year.



/s/ Joseph M. Candelario              Dated: March 27, 2003

JOSEPH M. CANDELARIO
FIRST VICE PRESIDENT
AND COMPLIANCE OFFICER


/s/ Mark Wong                          Dated: March 27, 2003

MARK WONG
SENIOR VICE PRESIDENT




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