FIX: RPC That Calls Another RPC Returns an Error Message and Incorrect Results

--STEP 1 (on Server1)
sp_addlinkedserver @server='Server2'
go
use tempdb
go
create procedure proc1 @param1 int output as set @param1=10 return
go

--STEP 2 (on Server2)
sp_addlinkedserver @server='Server1'
go
use tempdb
go
create procedure proc2 @param2 int output, @param3 char(15) output as 
declare @v1 int 
exec Server1.tempdb.dbo.proc1 @v1 output
select @param2=20
select @param3='Text Message'
return
go

-- STEP 3 (on server1)
declare @a1 int, @a2 char15)
exec server2.tempdb.dbo.proc2 @a1 output, @a2 output
select @a1, @a2
go