generated: '2026-08-27'
method: searched
source: https://docs.sepasoft.com/articles/release-notes-publication/service-pack-release-notes
provider: Sepasoft
providerId: sepasoft
title: Sepasoft Service Pack (SP) Release Notes
urls:
  mes_3_0: https://docs.sepasoft.com/articles/release-notes-publication/service-pack-release-notes
  mes_4_0: https://docs.sepasoft.com/articles/release-notes-publication/mes-4-0-current-service-pack-sp-release-notes
  downloads: https://www.sepasoft.com/downloads/
format: html
machine_readable: false
dated: true
scheme: >-
  Two parallel lines, one per Ignition platform. Each Service Pack publishes an itemized
  table of issues keyed on a MES-nnnn ticket id, classified Bug / Improvement / New Feature,
  tagged by module (Batch, Trace, OEE, ...), with the fix description.
note: >-
  The release notes are HTML on the ClickHelp docs portal. A ".md" suffix on the article
  URL returns the same page as markdown, which is the only machine-readable form available.
  There is no RSS/Atom feed, no JSON changelog and no per-release permalink beyond the
  in-page anchors.
current:
  mes_3_0:
    version: 3.81.13 SP1
    released: '2026-07-31'
    ignition_line: '8.1'
  mes_4_0:
    version: 4.83.3 SP1
    released: '2026-07-31'
    ignition_line: '8.3'
entries:
  - version: 3.81.13 SP1
    line: MES Platform 3.0 (Ignition 8.1)
    date: '2026-07-31'
    breaking: false
    highlights:
      - 'MES-7794 (Bug, Batch): resolved a race condition when saving Batch Control Logics so batch params on tags changing near the end of RUNNING update correctly.'
      - 'MES-7841 (Bug, Batch/Task-Routing): Phase Manager no longer throws GENERAL_PROTOCOL_EXCEPTION [100] on a Task Routing Visual or Analysis gateway.'
      - 'MES-7876 (Improvement, Batch/Trace): added Auto Lot Completion to recordOperation and a new Auto_Lot_Completion sub-parameter on Material In.'
      - 'MES-7907 (Bug, Batch): BatchScript phase scripts now receive the full step itemPath as stepPath.'
      - 'MES-7929 (Bug, Batch): the latest version of a phase is now pulled into recipes (changesets after Version 1).'
    source: https://docs.sepasoft.com/articles/release-notes-publication/service-pack-release-notes
  - version: 3.81.13 SP0
    line: MES Platform 3.0 (Ignition 8.1)
    breaking: false
    note: Published in the same SP release-notes article; itemized in the 3.81.13 SP0 section.
    source: https://docs.sepasoft.com/articles/release-notes-publication/service-pack-release-notes
  - version: 4.83.3 SP1
    line: MES Platform 4.0 (Ignition 8.3)
    date: '2026-07-31'
    breaking: false
    highlights:
      - 'Carries the same MES-7794 / MES-7841 / MES-7876 / MES-7907 / MES-7916 / MES-7929 fix set as the 3.81.13 SP1 line.'
      - 'MES-7806 (New Feature, Batch): the Batch List component recipe dropdown became a text box so recipes can be filtered.'
    source: https://docs.sepasoft.com/articles/release-notes-publication/mes-4-0-current-service-pack-sp-release-notes
  - version: 4.83.3 SP0
    line: MES Platform 4.0 (Ignition 8.3)
    breaking: false
    source: https://docs.sepasoft.com/articles/release-notes-publication/mes-4-0-current-service-pack-sp-release-notes
  - version: 4.83.2 RC5
    line: MES Platform 4.0 (Ignition 8.3)
    date: '2026-04-30'
    channel: release-candidate
    source: https://www.sepasoft.com/downloads/
  - version: 3.81.13 RC1
    line: MES Platform 3.0 (Ignition 8.1)
    date: '2026-02-06'
    channel: release-candidate
    source: https://www.sepasoft.com/downloads/
in_product:
  name: MES Changelog Viewer
  description: >-
    Sepasoft also ships an in-product changelog surface documented as the MES Changelog
    Viewer, reachable in the Ignition Gateway at Config > MES Modules > Change Log Update.
  source: https://docs.sepasoft.com/articles/user-manual/mes-changelog-viewer