Description of problem:

RHDS 12 documentation just mentions as pre-requisites of just install the Directory Server instance instead of stating or hyper linking the documents.

https://docs.redhat.com/en/documentation/red_hat_directory_server/12/html-single/configuring_and_managing_replication/index#proc_preparing-the-new-consumer-using-the-command-line_assembly_configuring-single-supplier-replication-using-the-command-line

Version-Release number of selected component (if applicable):

RHDS 12 documentation

Note : That was clearly explained in the RHDS 11 documentation.

RHDS 11 documentation for reference : https://docs.redhat.com/en/documentation/red_hat_directory_server/11/html/administration_guide/single-supplier_replication#setting_up_single-supplier_replication_using_the_command_line