In the documentation page https://www.zabbix.com/documentation/7.2/en/manual/appendix/macros/supported_by_location
there is a macro {ITEM.KEY.ORIG} and it's said that it is supported in HTTP agent type item, item prototype and discovery rule fields:
URL, Query fields, Request body, Headers, Proxy, SSL certificate file, SSL key file, Allowed hosts. But entering this macro in the Allowed hosts field for those item types, results in error. Also server does not support it there.
The documentation is wrong in this case and affects many versions.