<Enhancement to product>
We have optimized the way our system calculates Mastercard Interchange Rate Designator. Way4 will rely solely on the automated import of IRD criteria from Mastercard MPE tables. Taking the data directly from the payment scheme has proved efficient, with less transactions rejected due to incorrect IRD.
The older method, i.e. the distribution of our custom IRD Criteria configuration data, will stop working since Way4 03.51. But we recommend not to wait till Q4 2020, and to enable the import method as soon as possible. The necessary steps are described in the document “Configuring Way4 for Calculation of Mastercard IRD”. For additional instructions, please send a request via our customer support portal.