Merge replication Error at the subscribers

I was working on a merge replication on SQL SERVER 2012. I have one central server with the publication and distribution configured on the same machine.I have another three machines with SQL SERVER 2012 as subscribers. The replication is working fine, however I run in to the following error on all the subscribers

The schema script

if exists (select * from syscolumns where name = N'TransporterID' and id = object_id(N'[dbo].[Transporter]')) if object_id(N'[dbo].[Transporter]') is not null exec('ALTER TABLE [dbo].[Transporter] DROP COLUMN TransporterID')' could not be propagated to the subscriber.

Thanks