Other resources IBM DL/I V1R12.1 Release Guide Discover the latest enhancements provided with DL/I VSE 1.12.1 available since z/VSE 6.2. Read the documentation (PDF, 1.3 MB) IBM DL/I VSE V1R12 Messages and Codes Learn how to interpret the messages and codes issued by the IBM DL/I VSE licensed programs. Read the documentation IBM DL/I VSE V1.12.1 and IBM z/VSE V6.2 update Get the details of the further capabilities of z/VSE V6.2 with additional enhancements using continuous delivery. Read the documentation Expert resources to help you succeed IBM Knowledge Center Get information about how to maintain and use the product. Support Learn more about product support options.