about design rule check errors

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Hello,Why clicking on “design rule check -> RUN DRC” after the emergence of more than three thousand errors?

Design Rule Verification Report:

Clearance Constraint (Gap=0.085mm) ((IsRegion AND (OnLayer(‘L2′) OR OnLayer(‘L11′)))),(All) count:864

Differential Pairs Uncoupled Length using the Gap Constraints (Min=0.1mm) (Max=0.19mm) (Preferred=0.1mm) and Width Constraints (Min=0.381mm) (Max=0.381mm) (Preferred=0.381mm) (InDifferentialPairClass(‘DIFF90′)) count:320

Differential Pairs Uncoupled Length using the Gap Constraints (Min=0.1mm) (Max=0.22mm) (Preferred=0.1mm) and Width Constraints (Min=0.381mm) (Max=0.381mm) (Preferred=0.381mm) (InDifferentialPairClass(‘DIFF100′)) count:2086

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Hi, what version of Altium do you use? The iMX6 Project was designed in Altium 2013 and there was a big change how Altium 2014 defines differential pairs. This is causing the violation errors. If you would like to fix it, go to Design -> Rules … then look for Routing -> Differential Pairs Routing. Set up the Width according to the old rules (the old rules should be still available under Routing->Width). You also may need to Repour All Polygons. That should fix the errors.

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DRC again without any error after setting Differential Pairs Routing parameters and L2 & L11 Repour All Polygons. Will my operating correctly?

The setting shown below:

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