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  WARHAMMER 40,000 – CODEX: ADEPTUS MECHANICUS
  WARHAMMER 40,000 
  CODEX: ADEPTUS MECHANICUS
  Official Update Version 1.0
  Although we strive to ensure that our rules are perfect, 
  sometimes mistakes do creep in, or the intent of a rule 
  isn’t as clear as it might be. These documents collect 
  amendments to the rules and present our responses to 
  players’ frequently asked questions. As they’re updated 
  regularly, each has a version number; when changes 
  are made, the version number will be updated, and any 
  changes from the previous version will be highlighted 
  in magenta. Where a version number has a letter, 
  e.g. 1.1a, this means it has had a local update, only in 
  that language, to clarify a translation issue or other 
  minor correction.
  ERRATA
  Page 83 – Onager Dunecrawler, Damage table
  Change the top value under ‘Remaining W’ to 
  read ‘6-11+’.
  FAQs
  Q: Do I need to spend reinforcement points to return units when 
  using the Fresh Converts Stratagem?
  A: No.
  Q: If you have a Detachment which recieves the Mars forge 
  world dogma, and another Detachment which recieves a 
  different forge world dogma, what happens when rolling for 
  Canticles of the Omnissiah? With Mars’ dogma you roll two dice 
  when determining Canticles and units with that dogma benefit 
  from both results, but what happens for the other Detachment?
  A: In such cases you would roll dice separately for the 
  Canticles, rather than rolling for both together. The first 
  Canticle rolled for would apply to all of your units with 
  the Canticles of the Omnissiah ability, while the second 
  would apply only to those units in Mars Detachments.
  
SOURCE: textdata/thevault/Warhammer/40k/1st-8th Editions (Prior)/8th Edition (2017)/5) FAQs/2017 FAQs/40K_8th_ed_Update_Codex_Adeptus_Mechanicus_ver_1.0.pdf