Joined: 06 Jun 2008 Posts: 8233 Location: Dubuque, Iowa, USA
From the CICS Application Programming Guide:
18.104.22.168 Upper case translation
CICS converts lower case input characters to upper case automatically under some circumstances. The definition of the terminal and the transaction together determine whether translation occurs. See the UCTRAN option of the PROFILE and the TYPETERM definitions in CICS Resource Definition Guide for how these specifications interact.
You can suppress this translation by using the ASIS option on your RECEIVE MAP command, except on the first RECEIVE in a task initiated by terminal input. (The first RECEIVE may be either a RECEIVE MAP (without FROM) or a terminal control RECEIVE.) CICS has already read and translated this input, and it is too late to suppress translation. (Its arrival caused the task to be invoked, as explained in "How tasks are started" in topic 3.1.2.) Consequently, ASIS is ignored entirely in pseudoconversational transaction sequences, where at most one RECEIVE MAP (without FROM) occurs per task, by definition. For the same reason, you cannot use ASIS with the FROM option (see "Formatting other input" in topic 6.5.12).
You could try the ASIS option but if it doesn't work, since the terminal AND the transaction determine whether or not translation occurs, you will have to consult your site support group to work with the CICS support group (or person) to ensure everything is set up correctly. If ASIS does not do it, there is nothing you, by yourself, can do to fix this.