Profile chains

In general, these are variables of a profile, which are automatically transferred with this prefix to a called subsequent profile. These variables are therefore only available in the subsequent profile, where they are initialised at the start of phase 1. See chapter Passed Variables, Lists and Maps. Please also note the special features for the classes CallCronProfile and CallProfile.

See also section Metadata editor.

HTTP

However, this prefix is also used for automatically set system variables for HTTP request parameters, HTTP request headers and HTTP response headers. See the general section HTTP.

AMQP

In addition, such variables can also be used to read parameters in headers of AMQP messages. See section AMQP (Input Agent).

Reading MSG_CALL_ variables without creating them

See function copy variables into map().