How to proceed if I wish to extend the set of supported services?

An ASPSP has to provide a testing facility beyond September 14th 2019. So, again, it is highly recommended to a TPP to test a new service prior to taking it to the productive system of the ASPSP. This ensures the TPP is granted technical support of the ASPSP in case of issues. Extending the services may require to renew the TPP’s certificate and license such that the TPP is, in fact, permitted to provide those services.