You can confirm whether your terminal’s software was upgraded by checking the version of the payment application, depending on the Cardlink POS model you have at your business.
For Android models, versions 7.1.7 onwards allow integration with the IAPR.
For the Ingenico ICT220 models, versions 7.0.08 onwards allow integration with the IAPR.
For the Verifone Vx520 models, versions 7.0.06 onwards allow integration with the IAPR.