The Mana World Forums

In docs directory of manaserv.it mentioned
SERVER DATA

The server depends on parts of the client data and also has its own data
repository. These are the 'manadata' and 'manaserv-data' repositories.
Currently, manaserv expects these to be merged into a single 'data' directory.

1) Clone manadata and manaserv-data next to the manaserv repository
2) Symlink a 'data' directory in manaserv to manaserv-data
3) Symlink the following files from manaserv-data to manadata:

* data/items.xml - Item definitions
* data/monsters.xml - Monster definitions
* data/maps/*.tmx{.gz} - Maps

I didn't find the two repositories

You seem to be using an outdated guide. Care to post the URL so it can be updated?

Currently the Manaserv sourcecode comes with an example client- and server data. You find both in the directory "example". This is, however, a very rudimentary game world. We used to support Manaserv with the standard content for eAthena, but this is no longer the case because TMW decided to create new Manaserv content from scratch instead of recycling the old word, and keeping it up to date just as a tech demo for Manaserv wasn't worth the hassle.

As usual: the less you tell us about what exactly you want to achieve the less advise we can give you.