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What works is below code.
Please be my guest if you want to add X'404142' as long as you add same number of blanks to the 2nd parm of Xlate

dcl-s str char(1000);

str=X'12'+'some string'+X'350A13';

:' '+
' '

-----Original Message-----
From: RPG400-L <rpg400-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of Justin Taylor
Sent: Monday, November 22, 2021 13:57
To: rpg400-l@xxxxxxxxxxxxxxxxxx
Subject: Re: Remove unprintable chars

Per the CCSID chart, the first printable char is x'42'. So it sounds like the options are:
- Iterate thru each char and check < x'42'
- Use %scanrpl() for x'00' thru x'41'

Wow, either would be a lot of churning. Considering the low frequency, I think I'd be better off just trapping for the error.

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