SQL raisserror not showing - sql

Question

I'm trying to execute a sproc but I'm not sure if I'm going in the right direction. When my IF conditions are true it will not print my raiseerrors...
set transaction isolation level repeatable read
declare #return_value int = 0
declare #someValue int = 3
SET #retry = 3;
--Keep trying to update
--table if this task is
--selected as the deadlock
--victim.
WHILE (#retry > 0)
BEGIN
BEGIN TRY
BEGIN TRANSACTION;
--check someValue
if #someValue < 5
begin
raiserror ('number is less than 5', 16,1)
ROLLBACK TRANSACTION
return 99
end
--all o.k , set retry 0 ending the while, commit transaction--
SET #retry = 0;
COMMIT TRANSACTION;
END TRY
BEGIN CATCH
RAISERROR ('Errors found, please fix these errors and retry. Transaction Rolled back', 16, 2);
-- Check error number.
-- If deadlock victim error,
-- then reduce retry count
-- for next update retry.
-- If some other error
-- occurred, then exit
-- retry WHILE loop.
IF (ERROR_NUMBER() = 1205)
SET #retry = #retry - 1;
ELSE
SET #retry = -1;
IF XACT_STATE() <> 0
ROLLBACK TRANSACTION;
END CATCH;
END; -- End WHILE loop.

Answer 1

The first RaIsError will be consumed by the catch block. If you want to preserve it, and perhaps add additional information, you can do something like this:
set xact_abort, nocount on;
set transaction isolation level repeatable read; -- Scope is this stored procedure.
declare #LocalTransaction as Bit = case when ##TranCount = 0 then 1 else 0 end;
declare #Return_Value as Int = 0;
declare #SomeValue int = 3;
declare #Retry as Int = 3;
while #Retry > 0
begin
begin try
if #LocalTransaction = 1
begin transaction;
if #SomeValue < 5
RaIsError ( 'Number is less than 5.', 16, 1 );
set #Retry = 0;
if #LocalTransaction = 1
commit transaction;
end try
begin catch
if Error_Number() = 1205
set #Retry -= 1;
else
begin
set #Retry = -1;
-- Save the exception.
declare #ErrorLine as Int = Error_Line();
declare #ErrorMessage as NVarChar(4000) = Error_Message();
declare #ErrorNumber as Int = Error_Number();
declare #ErrorProcedure as NVarChar(126) = Error_Procedure();
declare #ErrorSeverity as Int = Error_Severity();
declare #ErrorState as Int = Error_State();
declare #NewLine as Char(2) = Char( 13 ) + Char( 10 ); -- '\r\n'.
-- Rollback only transactions when there is an active transaction that we started.
if Xact_State() <> 0 and #LocalTransaction = 1
rollback transaction;
-- Exit with the exception.
RaIsError( '%s%s#%i [Proc: %s/Line %i]', #ErrorSeverity, #ErrorState, #ErrorMessage, #NewLine, #ErrorNumber, #ErrorProcedure, #ErrorLine );
return 99;
end;
end catch;
end;
Note that the error return is also handled by the catch block since code in the try block after the RaIsError shouldn't execute.