We have configured BCS search in SharePoint 2016. Created External content type with Sharepoint Designer and created Content Source using with External content type.(Source in Documentum). While run Full crawl, completed less than 3 hours and got errors. Again we ran Incremental crawl, errors were disappeared, but incremental crawl is running forever until We stopped incremental crawl.Bcs

Please help us to resolve this issue

Thanks in Advance

  • Does your BCS ECT support incremental crawling? Commented Aug 20, 2017 at 0:34
  • Hi Matthew, Thanks for reply. Actually I have no idea, how to check either BCS ECT support incremental crawling or not. Commented Aug 21, 2017 at 5:57
  • The person who created the ECT should know. If they don't then it is unlikely that incremental crawling is supported. Commented Aug 21, 2017 at 21:21
  • I think they are not configure ECT to support Incremental Crawling, could you please advice how to do Commented Aug 31, 2017 at 10:50
  • See my answer below. Commented Sep 1, 2017 at 23:06

1 Answer 1


You have to create supply the LastModifiedTimeStampField property on the Finder Method Instance and point it at the property of you External Content Type's last modified timestamp field. This will be used for incremental crawling.

<Property Name="LastModifiedTimeStampField" Type="System.String">LastModified</Property>

More Info Developing for BCS

  • Hi Matthew, I have tried with that property, but no luck <MethodInstance Type="Finder" ReturnParameterName="Read List" Default="true" Name="Read List" DefaultDisplayName="Simon_In_Test Read List"> <Properties> <Property Name="LastModifiedTimeStampField" Type="System.String">Modified_date</Property> <Property Name="RootFinder" Type="System.String"></Property> <Property Name="UseClientCachingForSearch" Type="System.String"></Property> </Properties> Commented Sep 4, 2017 at 10:48
  • Is Modified_date returned in your query? Commented Sep 5, 2017 at 12:47
  • Finally we got to work that we need to add <Property Name="LastModifiedTimeStampField" Type="System.String">LastModified</Property> in Specific Finder Method Read Item Commented Nov 2, 2017 at 11:17
  • Yes, glad you got it working. Can you mark the answer? Commented Nov 3, 2017 at 11:55

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