SOAP Tooklit Authentication Update {#soap-p12}
==============================================

Cybersource will no longer support username- and password-based authentication for merchants who use the *SOAP toolkit key* . You are required to remove username- and password-based authentication from your SOAP toolkit integration and transition to certificate-based authentication by these dates:

* Test Environment: April 15, 2026
* Production validation test (shock test): September 30, 2026. This applies only to selected merchants.
* Production Environment: October 7, 2026

{#soap-p12_ul_hbm_lwq_zjc} Your API requests to Cybersource will be rejected if you do not implement P12 authentication by the required dates.  
See [*P12 Authentication Upgrade for SOAP Toolkit Key Users Migration Guide*.](https://developer.cybersource.com/docs/cybs/en-us/so-p12/migration/all/so/so-p12/so-p12-intro.md "")