Fitch Affirms 12 Classes from 2 J.P. Morgan Mortgage Trust RMBS Issues.

NEW YORK -- Fitch Ratings affirms the following J.P. Morgan Mortgage Trust issues:

Series 2003-A1

-- Class A affirmed at 'AAA';

-- Class B-1 affirmed at 'AA';

-- Class B-2 affirmed at 'A';

-- Class B-3 affirmed at 'BBB';

-- Class B-5 affirmed at 'B'.

Series 2003-A2

-- Class A affirmed at 'AAA';

-- Class B-1 affirmed at 'AA';

-- Class B-2 affirmed at 'A';

-- Class B-3 affirmed at 'BBB';

-- Class B-4 affirmed at 'BB';

-- Class B-5 affirmed at 'B'.

All of the mortgage loans in the series 2003-A1 transaction were originated by Cendant Mortgage Corporation. All of the mortgage loans in the series 2003-A2 transaction were originated by Countrywide Home Loans, Inc., Cendant Mortgage Corporation, and Wells Fargo Home Mortgage, Inc. The mortgage loans consist primarily of conventional, adjustable-rate, fully amortizing, first lien residential mortgage loans with an original term to maturity of 30 years. J.P. Morgan Mortgage Acquisition Corp., a Delaware corporation, had previously acquired the mortgage loans from the originators.

The affirmations reflect a satisfactory relationship between credit enhancement (CE) and future loss expectations and affect approximately $408.3 million of outstanding certificates. As of the November 2005 distribution date, series 2003-A1 transaction is 25 months seasoned, and series 2003-A2 transaction is 24 months seasoned. All classes in both transactions have experienced small to moderate growth in CE since the last rating action date, and there have been no collateral losses to date. The current pool factors (current mortgage loan principal outstanding as a percentage of the initial pool) are approximately 80% and 70% for series 2003-A1 and 2003-A2 transactions, respectively.

All of the mortgage loans in the series 2003-A1 transaction are serviced by PHH Mortgage Corporation, rated 'RPS1' by Fitch. All of the mortgage loans in the series 2003-A2 transaction are serviced by Countrywide Home Loans, Inc. (rated 'RPS1' by Fitch), PHH Mortgage Corporation (rated 'RPS1' by Fitch), and Wells Fargo Home Mortgage, Inc. (rated 'RPS1' by Fitch). The master servicer for the series 2003-A2 transaction is Wells Fargo Bank Minnesota, National Association, rated 'RMS1' by Fitch.

Fitch will closely monitor these transactions. Further information regarding current delinquency, loss, and credit enhancement statistics is available on the Fitch Ratings website at www.fitchratings.com.

Fitch's rating definitions and the terms of use of such ratings are available on the agency's public site, www.fitchratings.com. Published ratings, criteria and methodologies are available from this site, at all times. Fitch's code of conduct, confidentiality, conflicts of interest, affiliate firewall, compliance and other relevant policies and procedures are also available from the 'Code of Conduct' section of this site.