Sync level 1 logic in a CICS Transaction Server for Windows--CICS on System/390 link

The picture shows sync level 1 commit logic in four stages:

  1. A CICS Transaction Server for Windows system requests a CICS on System/390 system to commit data changes.
  2. The CICS on System/390 system commits.
  3. The CICS on System/390 system confirms that it has committed its data changes.
  4. The CICS Transaction Server for Windows system commits.