The value for this CCSID was not previously set by a /SET directive in this source file.
20
Cause . . . . . : The CCSID keyword specified on the /RESTORE directive must previously have been set by a /SET directive in the same source file. The keyword is ignored.
Recovery . . . : Ensure that the CCSID keywords for the /SET and /RESTORE directives are balanced within a source file. Compile again.
Technical description . . . . . . . . : Any /SET directives coded within a /COPY file are automatically restored when the /COPY file ends. /RESTORE directives must be specified within the same source file as the /SET directive.