This topic describes the programming required for the stringprep conversion services.

Unicode System Services for International String preparation is also referred to as 'stringprep'. The stringprep conversion service can be called using a stub routine named CUNLSTRP for AMODE (31), and CUN4LSTP for AMODE (64).

Preparation of Internationalized Strings, better known as "Stringprep," is a way of preparing Unicode text strings in order to increase the likelihood that string input and string comparison work in ways that make sense for typical users throughout the world. The stringprep protocol is useful for identifier values, company and personal names, internationalized domain names, and other text strings.

This z/OS® Unicode implementation meets the specifications described in the RFC 3454. For further information about the string preparation standard, see http://ietfreport.isoc.org/idref/rfc3454/.

IMPORTANT: z/OS stringprep service requires the normalization services to be active on the current Unicode Environment. Also, ensure that bidi services are installed on the system.