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Dynamics 365 Community / Forums / Microsoft Dynamics 365 | Integration, Dataverse... / Syncing problem to phone
Microsoft Dynamics 365 | Integration, Dataverse...
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Syncing problem to phone

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Posted on by MV-24120728-0 52
I have imitated a synchronization from Dynamics to my phone - so I sync to Outlook for contacts and from Outlooks I sync to my phone
-> but after the syncing, the contact has duplicate records
-> why is this happening 
Categories:
Dynamics 365 general
I have the same question (0)
  • Suggested answer
    Sohail Ahmed Profile Picture
    Sohail Ahmed 11,169 Super User 2026 Season 1 on at

    Root Cause: Dynamics 365 and Outlook/phone are creating duplicate contact records during the sync process.

     

    Common Reasons:

    • Matching criteria mismatch - systems can't identify it's the same contact

    • Email address formatting differences (spaces, case sensitivity)

    • Multiple sync processes running simultaneously

    • Field mapping conflicts between D365 → Outlook → Phone


      •  
     

    Quick Fixes:


    1. Check duplicate detection rules in D365 Settings

    2. Use Server-Side Sync directly from D365 to Outlook (skip manual sync)

    3. Verify contact matching fields (email, name format) are consistent

    4. Disable phone's auto-sync temporarily, clean duplicates, then re-enable


      5.  
     

    Best Practice: Use D365 Server-Side Sync instead of manual Outlook sync to avoid this issue.

     

    ✅ Mark below checkbox to make this answer Verified if it helps you.

  • MV-24120728-0 Profile Picture
    MV-24120728-0 52 on at
    It occurs after the sync, and I have already transited to using server-side sync 

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