OCTET STRINGs, UTF8Strings, etc are unusable: The following ...
description OCTET STRING
... would cause this error:
string (in ...) must have a SIZE range set!
Something like this must be used instead:
description OCTET STRING (SIZE(1..10))
This error can't be bypassed; it blocks the generation of code.
Also note that OCTET STRINGs are a "last resort"; the content inside them can be usually
broken down in simple (base) ASN.1 types, and that is the prefered approach in ASN.1,
not "black-box" types.