The 2019 edition includes an appendix (Mandatory Appendix III) titled “Guidelines for the Designation of Specification Revisions” and a list of deleted specifications. Review that section.
: The 2019 edition is a historical document, as ASME releases updates every two years (current editions include 2023 and the upcoming 2025 version). You can search for specific versions in the ASME Digital Collection . asme bpvc section ii part a 2019 pdf