COBCH0137 Program collating sequence not defined

You have included the PROGRAM COLLATING SEQUENCE clause in the OBJECT-COMPUTER paragraph of your code but have failed to code a corresponding ALPHABET-NAME in the SPECIAL-NAMES paragraph. Your code must contain an ALPHABET-NAME clause if it has a PROGRAM COLLATING SEQUENCE clause in it.

Resolution:

Insert the necessary ALPHABET-NAME clause ensuring it has the same user-defined-name as that used in the SEQUENCE entry. If you have specified both of these clauses in your code but have still received this message then ensure that you have used the same user-defined-name in each and that it is spelled the same in both. Correct any spelling error your code might contain.