Paul On my system it looks like it is the address of the CDX - mapped by IHACDX.
Obviously IBM reserves the right to put whatever they want in a "diagnostic" field and change its contents and meaning at any point - so I would not advise using this field as a reliable interface. Rob Scott Rocket Software ________________________________ From: IBM Mainframe Discussion List <[email protected]> on behalf of Paul Schuster <[email protected]> Sent: 03 June 2026 10:28 PM To: [email protected] <[email protected]> Subject: CSV550I message EXTERNAL EMAIL Hello, In the CSV550I message there is a 'DIAG' field that contains 4 bytes of " Diagnostic data." Unfortunately the CSV550I message doesn't expand on the meaning of these 4 bytes. Is the meaning of these 4 bytes available in another message or in a publicly available DSECT? Thank you. Paul ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN ================================ Rocket Software, Inc. and subsidiaries ? 77 Fourth Avenue, Waltham MA 02451 ? Main Office Toll Free Number: +1 855.577.4323 Contact Customer Support: https://my.rocketsoftware.com/RocketCommunity/RCEmailSupport Unsubscribe from Marketing Messages/Manage Your Subscription Preferences - http://www.rocketsoftware.com/manage-your-email-preferences Privacy Policy - http://www.rocketsoftware.com/company/legal/privacy-policy ================================ This communication and any attachments may contain confidential information of Rocket Software, Inc. All unauthorized use, disclosure or distribution is prohibited. If you are not the intended recipient, please notify Rocket Software immediately and destroy all copies of this communication. Thank you. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
