SLAS Support for Custom Parameters and Hooks

Custom parameters can be passed to the following SLAS endpoints:

/login. When applicable, SLAS passes custom parameters to the OCAPI SHOP /customers/auth hooks.
/authorize. When applicable, SLAS passes this information to 3rd party IDPs.

Make sure you prefix the parameter names with c_.

The /login and /authorize endpoints do not pass custom headers to the B2C Commerce platform or 3rd party IDPs. They ignore custom headers without throwing an error.
There are no SCAPI hooks for the /login and /authorize endpoints. /login runs /customers/auth hooks and /authorize runs no hooks.