−Removed: There have been no material changes to the risk factors disclosed in Item 1A of our Form 10-K for the fiscal year ended December 31, 2019, other th an as disclosed in "COVID-19 Pandemic" in Part 1, Item 2 ("Management's Discussion and Analysis of Financial Condition and Results of Operations") of this report, which is incorporated into this item by reference .
−Removed: The ongoing COVID-19 pandemic could adversely affect our business, results of operations and financial condition.
−Removed: The COVID-19 pandemic may also have the effect of heightening many of the other risks described in Item 1A of our Form 10-K for the fiscal year ended December 31, 2019 , including risks associated with slowing global economic conditions, demand for our products, delays or cancellations of customer projects, failures to obtain renewals of customer contracts, and reluctance of prospective customers to switch to a new vendor.
+Added: There have been no material changes to the risk factors disclosed in Item 1A of our Form 10-K for the fiscal year ended December 31, 2020, other than as described below.
+Added: Additional risks and uncertainties, including risks and uncertainties not presently known to us, or that we currently deem immaterial, could also have an adverse effect on our business, financial condition and/or results of operations.
+Added: Our software products may contain undetected defects, or errors may occur when our services are provided, which could damage our reputation with customers, decrease profitability, and expose us to liability.
+Added: Our software products are complex.
+Added: Software may contain bugs or defects that could unexpectedly interfere with the operation of the software products when first introduced or as new versions are released.
+Added: Additionally, errors could occur in the provision of our services, including processing services such as our bill payment services and other services delivered through the ACI On Demand platform.
+Added: Software defects or service errors may result in the loss of, or delay in, market acceptance of our products and services and a corresponding loss of sales or revenues.
+Added: Customers depend upon our products and services for mission-critical applications, and product defects or service errors may hurt our reputation with customers.
+Added: In addition, software product defects or errors could subject us to liability for damages, performance and warranty claims, and fines or penalties from governmental authorities, which could be material.
+Added: For example, in April 2021, erroneous ACH files were inadvertently transmitted to a processing bank while conducting a test of our ACH file production system.
+Added: We processed reversal files at the first available opportunity to correct the error and worked diligently to ensure that any impacts to consumers were addressed and corrected.
+Added: We nonetheless were contacted by consumer protection and regulatory agencies about this matter.
+Added: We are cooperating with these government authorities in their inquiries, which could result in fines or penalties.
Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.