SIS Europe 424B3 Prospectus supplement

Exhibit 12.1

SunGard Data Systems Inc.

Computation of Ratio of Earnings to Fixed Charges (Unaudited)

($ in millions)

	Three Months Ended September 30,						Nine Months Ended September 30,
	2006			2007			2006			2007
Fixed charges(a)
Interest expense	$	157		$	152		$	459		$	458
Amortization of debt issuance costs and debt discount		9			10			25			28
Portion of rental expense representative of interest		15			17			44			53
Total fixed charges	$	181		$	179		$	528		$	539
Earnings
Income (loss) before income taxes	$	(29	)	$	(4	)	$	(147	)	$	(111	)
Fixed charges per above		181			179			528			539
Total earnings	$	152		$	175		$	381		$	428
Ratio of earnings to fixed charges		*			*			*			*

* Earnings for the three and nine months ended September 30, 2006 and 2007 were inadequate to cover fixed charges by $29 million, $4 million, $147 million and $111 million, respectively.

(a) Fixed charges for the nine months ended September 30, 2007 excludes approximately $28 million of expense associates with the early retirement of the $400 million of senior floating rate notes due 2013.