diff --git a/database/mssql/scripts/versions/revert/v_49_ddl_revert.sql b/database/mssql/scripts/versions/revert/v_49_ddl_revert.sql
new file mode 100644
index 000000000..d5f61086c
--- /dev/null
+++ b/database/mssql/scripts/versions/revert/v_49_ddl_revert.sql
@@ -0,0 +1,41 @@
+SET ANSI_NULLS ON
+GO
+SET QUOTED_IDENTIFIER ON
+GO
+SET NOCOUNT ON
+GO
+
+SET XACT_ABORT ON
+GO
+SET TRANSACTION ISOLATION LEVEL SERIALIZABLE
+GO
+BEGIN TRANSACTION
+GO
+
+DROP INDEX [permit].[ORBC_PERMIT_HIST].[ORBC_PERMIT_H_ID_ENDDATE_IX]
+
+
+IF @@ERROR <> 0 SET NOEXEC ON
+GO
+
+DECLARE @VersionDescription VARCHAR(255)
+SET @VersionDescription = 'Reverting adding index to permit history table'
+
+INSERT [dbo].[ORBC_SYS_VERSION] ([VERSION_ID], [DESCRIPTION], [RELEASE_DATE]) VALUES (48, @VersionDescription, getutcdate())
+
+IF @@ERROR <> 0 SET NOEXEC ON
+GO
+
+COMMIT TRANSACTION
+GO
+IF @@ERROR <> 0 SET NOEXEC ON
+GO
+DECLARE @Success AS BIT
+SET @Success = 1
+SET NOEXEC OFF
+IF (@Success = 1) PRINT 'The database revert succeeded'
+ELSE BEGIN
+   IF @@TRANCOUNT > 0 ROLLBACK TRANSACTION
+   PRINT 'The database revert failed'
+END
+GO
\ No newline at end of file
diff --git a/database/mssql/scripts/versions/v_49_ddl.sql b/database/mssql/scripts/versions/v_49_ddl.sql
new file mode 100644
index 000000000..9c6b849ad
--- /dev/null
+++ b/database/mssql/scripts/versions/v_49_ddl.sql
@@ -0,0 +1,45 @@
+SET ANSI_NULLS ON
+GO
+SET QUOTED_IDENTIFIER ON
+GO
+SET NOCOUNT ON
+GO
+
+SET XACT_ABORT ON
+GO
+SET TRANSACTION ISOLATION LEVEL SERIALIZABLE
+GO
+BEGIN TRANSACTION
+GO
+
+CREATE NONCLUSTERED INDEX [ORBC_PERMIT_H_ID_ENDDATE_IX] ON [permit].[ORBC_PERMIT_HIST]
+(
+	[END_DATE_HIST] ASC,
+	[ID] ASC
+)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
+GO
+
+
+IF @@ERROR <> 0 SET NOEXEC ON
+GO
+
+DECLARE @VersionDescription VARCHAR(255)
+SET @VersionDescription = 'Add index to permit history table to resolve deadlocks'
+
+INSERT [dbo].[ORBC_SYS_VERSION] ([VERSION_ID], [DESCRIPTION], [UPDATE_SCRIPT], [REVERT_SCRIPT], [RELEASE_DATE]) VALUES (49, @VersionDescription, '$(UPDATE_SCRIPT)', '$(REVERT_SCRIPT)', getutcdate())
+IF @@ERROR <> 0 SET NOEXEC ON
+GO
+
+COMMIT TRANSACTION
+GO
+IF @@ERROR <> 0 SET NOEXEC ON
+GO
+DECLARE @Success AS BIT
+SET @Success = 1
+SET NOEXEC OFF
+IF (@Success = 1) PRINT 'The database update succeeded'
+ELSE BEGIN
+   IF @@TRANCOUNT > 0 ROLLBACK TRANSACTION
+   PRINT 'The database update failed'
+END
+GO