SPI Developer Guide Purpose and Scope Purpose and Scope Choosing the deployment layout.adoc Setting up ASPSP Profile options.adoc Implementing SPI-API.adoc Configuring XS2A Service.adoc Configuring CMS Service.adoc Working with CMS.adoc Upgrading XS2A instances version on the same server.adoc Special modes.adoc Certificate generator.adoc Configuration properties.adoc Multilevel Sca.adoc Extending payment validation.adoc