How to make 2 Rules work that use the very same Rules Event?
2 separate Rules using the same &quot;after update something&quot; event, that's asking for problems.
You should try to rework/redesign those 2 rules somehow. Here are a few ways to do so:

If both rules don't have any Rules Conditions, then move all the Rules Actions of 1 rule to the other rule (and think of the best &quot;order&quot; to execute all Rules Actions).

If Rule 1 has a Rules Condition (say) &quot;Condition1&quot; and Rules Action (say) Action1, and Rule 2 has a Rules Condition (say) &quot;Condition2&quot; and Rules Action (say) Action2, then use the Conditional Rules module to merge both rules together (also), with a Rules Action (not Rules condition!) that looks like so:

Conditional
If Condition 1 then Action 1
Conditional
If Condition 2 then Action 2

Note: if appropriate, first perform anything related to Rule 2, then Rule 1