Also, here is updated link for sql scrips (you have to execute them before configure reporting server):
https://github.com/netxms/netxms/tree/master/src/java/nxreporting/sql

I had an issue after execute this script:
https://github.com/netxms/netxms/blob/master/src/java/nxreporting/sql/mssql/nxreporting.sql

it says that you should create the sequence:
CREATE SEQUENCE HIBERNATE_SEQUENCE
  INCREMENT BY 1
  MINVALUE 1
  CACHE 20;

it didn't work for me, so I had to execute the next script:
create table hibernate_sequence(
    next_val INTEGER NOT NULL,
 PRIMARY KEY(next_val)
);
insert into [dbo].[hibernate_sequence] (next_val) values (3);

that should be enough to make it works

sorry for my english, I speak spanish.
hope this could be helpful

Reporting.zip

Really need a clear, step by step instruction guide.