-1338 The function name has not been defined in any module in the program.

The named function is called from at least one module of the program, but it is defined in none. If you are using the Programmer's Environment, possibly one module was not defined as part of a multimodule program. If you are working at the command line, possibly one or more compiled .4go modules were omitted when the program files were concatenated to form the .4gi file.