SQL 2012 and later will fail to publish a database for any tables with a default constraint that references a user defined function.

Question

Script will create database, 3 database objects and publish. 
The error is due to the generation script to create the conflict tables that is not stripping out default constraints that reference a UDF. 
As you can see below, the failure is on the generation script for the conflict table.
The conflict table should be a bucket table that shouldn’t enforce data integrity. 
See how the default constraints for the columns someint and somestring were stripped out of the generation logic however the default constraint that utilizes a UDF persist and uses the same object name that was used on the production table (The
bold line) , this occurs if I explicitly name the constraint or let the system generate the name for me like in the example posted. 
  The only way I could see getting around this right now is to drop all default constraints in the system that uses a UDF, publish then add the constraints back which is vulnerable to invalid data and a lot of moving
steps.  This all worked with SQL 2000, 2005, 2008, 2008r2, it’s stopped working in SQL 2012 and continues to not work in SQL 2014. 
Error messages:
Message: There is already an object named 'DF__repTable__id__117F9D94' in the database.
Could not create constraint. See previous errors.
Command Text: CREATE TABLE [dbo].[MSmerge_conflict_MergeRepFailurePublication_repTable](
        [id] [varchar](8) NULL CONSTRAINT [DF__repTable__id__117F9D94]  DEFAULT ([dbo].[repUDF]()),
        [somedata] [varchar](64) NULL,
        [rowguid] [uniqueidentifier] ROWGUIDCOL  NULL,
        [someint] [int] NULL,
        [somestring] [varchar](64) NULL
Parameters:
Stack:    at Microsoft.SqlServer.Replication.AgentCore.ReMapSqlException(SqlException e, SqlCommand command)
   at Microsoft.SqlServer.Replication.AgentCore.AgentExecuteNonQuery(SqlCommand command, Int32 queryTimeout)
   at Microsoft.SqlServer.Replication.AgentCore.ExecuteDiscardResults(CommandSetupDelegate commandSetupDelegate, Int32 queryTimeout)
   at Microsoft.SqlServer.Replication.Snapshot.YukonMergeConflictTableScriptingManager.ApplyBaseConflictTableScriptToPublisherIfNeeded(String strConflictScriptPath)
   at Microsoft.SqlServer.Replication.Snapshot.BaseMergeConflictTableScriptingManager.DoConflictTableScriptingTransaction(SqlConnection connection)
   at Microsoft.SqlServer.Replication.RetryableSqlServerTransactionManager.ExecuteTransaction(Boolean bLeaveTransactionOpen)
   at Microsoft.SqlServer.Replication.Snapshot.BaseMergeConflictTableScriptingManager.DoConflictTableScripting()
   at Microsoft.SqlServer.Replication.Snapshot.MergeSmoScriptingManager.GenerateTableArticleCftScript(Scripter scripter, BaseArticleWrapper articleWrapper, Table smoTable)
   at Microsoft.SqlServer.Replication.Snapshot.MergeSmoScriptingManager.GenerateTableArticleScripts(ArticleScriptingBundle articleScriptingBundle)
   at Microsoft.SqlServer.Replication.Snapshot.MergeSmoScriptingManager.GenerateArticleScripts(ArticleScriptingBundle articleScriptingBundle)
   at Microsoft.SqlServer.Replication.Snapshot.SmoScriptingManager.GenerateObjectScripts(ArticleScriptingBundle articleScriptingBundle)
   at Microsoft.SqlServer.Replication.Snapshot.SmoScriptingManager.DoScripting()
   at Microsoft.SqlServer.Replication.Snapshot.SqlServerSnapshotProvider.DoScripting()
   at Microsoft.SqlServer.Replication.Snapshot.MergeSnapshotProvider.DoScripting()
   at Microsoft.SqlServer.Replication.Snapshot.SqlServerSnapshotProvider.GenerateSnapshot()
   at Microsoft.SqlServer.Replication.SnapshotGenerationAgent.InternalRun()
   at Microsoft.SqlServer.Replication.AgentCore.Run() (Source: MSSQLServer, Error number: 2714)
Get help: http://help/2714
Server COL-PCANINOW540\SQL2012, Level 16, State 0, Procedure , Line 1
Could not create constraint. See previous errors. (Source: MSSQLServer, Error number: 1750)
Get help: http://help/1750
Server COL-PCANINOW540\SQL2012, Level 16, State 0, Procedure , Line 1
Could not create constraint. See previous errors. (Source: MSSQLServer, Error number: 1750)
Get help: http://help/1750
Pauly C
USE [master]
GO
CREATE DATABASE [MergeRepFailure]
ALTER DATABASE [MergeRepFailure] SET COMPATIBILITY_LEVEL = 110
GO
USE [MergeRepFailure]
GO
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
create view
[dbo].[repView] as select right(newid(),8) as id
GO
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE FUNCTION [dbo].[repUDF]()
RETURNS varchar(8)
BEGIN
declare @val varchar(8)
select top 1 @val = id from [repView]
return @val
END
GO
create table repTable
id varchar(8) default([dbo].[repUDF]()),
somedata varchar(64) null,
rowguid uniqueidentifier ROWGUIDCOL default(newid()),
someint int default(1),
somestring varchar(64) default('somestringvalue')
GO
insert into reptable (somedata) values ('whatever1')
insert into reptable (somedata) values ('whatever2')
go
/*test to make sure function is working*/
select * from reptable
GO
/*Publish database*/
use [MergeRepFailure]
exec sp_replicationdboption @dbname = N'MergeRepFailure', @optname = N'merge publish', @value = N'true'
GO
declare @Descrip nvarchar(128)
select @Descrip = 'Merge publication of database ''MergeRepFailure'' from Publisher ''' + @@servername +'''.'
print @Descrip
-- Adding the merge publication
use [MergeRepFailure]
exec sp_addmergepublication @publication = N'MergeRepFailurePublication', @description = N'@Descrip',
@sync_mode = N'native', @retention = 14, @allow_push = N'true', @allow_pull = N'true', @allow_anonymous = N'true',
@enabled_for_internet = N'false', @snapshot_in_defaultfolder = N'true', @compress_snapshot = N'false', @ftp_port = 21,
@ftp_subdirectory = N'ftp', @ftp_login = N'anonymous', @allow_subscription_copy = N'false', @add_to_active_directory = N'false',
@dynamic_filters = N'false', @conflict_retention = 14, @keep_partition_changes = N'false', @allow_synctoalternate = N'false',
@max_concurrent_merge = 0, @max_concurrent_dynamic_snapshots = 0, @use_partition_groups = null, @publication_compatibility_level = N'100RTM',
@replicate_ddl = 1, @allow_subscriber_initiated_snapshot = N'false', @allow_web_synchronization = N'false', @allow_partition_realignment = N'true',
@retention_period_unit = N'days', @conflict_logging = N'both', @automatic_reinitialization_policy = 0
GO
exec sp_addpublication_snapshot @publication = N'MergeRepFailurePublication', @frequency_type = 4, @frequency_interval = 14, @frequency_relative_interval = 1,
@frequency_recurrence_factor = 0, @frequency_subday = 1, @frequency_subday_interval = 5, @active_start_time_of_day = 500, @active_end_time_of_day = 235959,
@active_start_date = 0, @active_end_date = 0, @job_login = null, @job_password = null, @publisher_security_mode = 1
use [MergeRepFailure]
exec sp_addmergearticle @publication = N'MergeRepFailurePublication', @article = N'repTable', @source_owner = N'dbo', @source_object = N'repTable', @type = N'table',
@description = null, @creation_script = null, @pre_creation_cmd = N'drop', @schema_option = 0x000000010C034FD1, @identityrangemanagementoption = N'manual',
@destination_owner = N'dbo', @force_reinit_subscription = 1, @column_tracking = N'false', @subset_filterclause = null, @vertical_partition = N'false',
@verify_resolver_signature = 1, @allow_interactive_resolver = N'false', @fast_multicol_updateproc = N'true', @check_permissions = 0, @subscriber_upload_options = 0,
@delete_tracking = N'true', @compensate_for_errors = N'false', @stream_blob_columns = N'false', @partition_options = 0
GO
use [MergeRepFailure]
exec sp_addmergearticle @publication = N'MergeRepFailurePublication', @article = N'repView', @source_owner = N'dbo', @source_object = N'repView',
@type = N'view schema only', @description = null, @creation_script = null, @pre_creation_cmd = N'drop', @schema_option = 0x0000000008000001,
@destination_owner = N'dbo', @destination_object = N'repView', @force_reinit_subscription = 1
GO
use [MergeRepFailure]
exec sp_addmergearticle @publication = N'MergeRepFailurePublication', @article = N'repUDF', @source_owner = N'dbo', @source_object = N'repUDF',
@type = N'func schema only', @description = null, @creation_script = null, @pre_creation_cmd = N'drop', @schema_option = 0x0000000008000001,
@destination_owner = N'dbo', @destination_object = N'repUDF', @force_reinit_subscription = 1
GO

Answer 1

More information, after running a profile trace the following 2 statements, the column with the default on a UDF returns a row while the other default does not.  This might be the cause of this bug.  Is the same logic to generate the object on
the subscriber used to generate the conflict table?  
exec sp_executesql N'
select so.name, schema_name(so.schema_id)
from sys.sql_dependencies d
inner join sys.objects so
on d.referenced_major_id = so.object_id
where so.type in (''FN'', ''FS'', ''FT'', ''TF'', ''IF'')
and d.class in (0,1)
and d.referenced_major_id <> object_id(@base_table, ''U'')
and d.object_id = object_id(@constraint, ''D'')',N'@base_table nvarchar(517),@constraint nvarchar(517)',@base_table=N'[dbo].[repTable]',@constraint=N'[dbo].[DF__repTable__id__117F9D94]'
exec sp_executesql N'
select so.name, schema_name(so.schema_id)
from sys.sql_dependencies d
inner join sys.objects so
on d.referenced_major_id = so.object_id
where so.type in (''FN'', ''FS'', ''FT'', ''TF'', ''IF'')
and d.class in (0,1)
and d.referenced_major_id <> object_id(@base_table, ''U'')
and d.object_id = object_id(@constraint, ''D'')',N'@base_table nvarchar(517),@constraint nvarchar(517)',@base_table=N'[dbo].[repTable]',@constraint=N'[dbo].[DF__repTable__somein__1367E606]'
Pauly C