Important: SOAP Toolkit Update {#rn-so-p12}
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As part of ongoing security enhancements, we are planning to upgrade SOAP API authentication to P12 authentication. This upgrade is currently available for Java, C#, C++, and PHP. For instructions, read the *[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 "")*.