When you update data at the subscriber, SQL begins a distributed transaction and apply that change in the subscriber and also in the publisher. If one of them fail, then...

Try specifying the alert for error 170 instead of severity.

Does you process access both remote and local server? If not you could create a job in the remote server to execute the query.

Do you execute the process from an...

Strange.

Run sp_helpmergearticle and check if there is any configuration difference between those problematic articles and the rest.

Use ISNULL function.

Check in BOL por use.

Check for sp_sproc_columns in BOL.

Once I create tables to save the configuration of my replication, and also create script to create the replication stored procedure with the information on those tables.

Seems complicated at the...

Did you change the server name while replication was setted up?

I think SQL create merge stored procedures with each reinitialization you made to the publication. Basically, every time you create a new snapshot.

Merge replication uses mucho more stored procedures that...

Check if the user in the db is member of another role that deny access to any object and check the permissions in the public role, wich of course that...

I think not. Only the table owner or db owner.

In the other hand, you could create a stored procedure wich creates an index and then you grant execute permission on...

If it is a job process you can try stopping the SQL Agent. If not I think you will have to restart the sql server.

If after rebooting, the process connect...

The msx server name refers to the Master server, not a target.

Do you have configured a master server?

Do you have the master and possible target server registered in EM with...

It is possible that it is  an issue of EM. However I would check the SQL Log of that server to be sure.

Sometimes it is necesary to close and opened EM,...

Thank guys. My first posted question.

I actually have 90 TSX Servers. And I setted up the polling interval to its maximum in all my servers. Wich is 28800 seconds (8...