As of July 2023 Acquiris controls the certification process for the payment terminals adhering to the C-TAP specifications v110.

The Terminal Certification Procedure provides an increasing level of confidence to Terminal Vendors and Acquirers/Acquirers Processors that the certified terminal adheres to the Multi Card Brand / Multi Acquirer principles of the SEPA-wide C-TAP specifications while providing an
uniform and consistent cardholder and merchant experience. An overview of this certification procedure can be found on the corresponding page.

Prior to July 2023 terminal certification services were provided as of June 2016 by Acquiris on the C-TAP v10.1 and as of 2012 on the C-TAP v10.0. Earlier than that certification services were provided by the C-TAP Authority for the Dutch payment terminals implementing the C-TAP 3.1 (and previous version) protocol and by EPCI for the Belgium payment terminals implementing the C-TAP 3.0 (and previous version) protocol.