SharePoint 2013 BCS and the Search Service App

Hi David,

I am assuming that you have created Content Source as Line of Business Data. if not then follow the Steps

1) Go to SSA

2) Click on Content Source

3) Name it "BCS" 

4) Select Live of Business Data

5) Select "Crawl selected external data source"

6) Check your External Data Source

7) OK & Full crawl (Note: Make sure you get Success in the Crawl Log if not then fix those issues)

8) once you done with crawl Create new Site or go to exsiting site where you want to add search web part

9) Go to Site Setting --> Resualt Source --> Create New Result Source--> 

10) Enter Name of the source CustomSearch

11) in Query Transform  copy this line {searchTerms} ContentSource:BCS  Note: BCS is source name which created in Step 3 --> Save

12) Now Edit your Search Page 

13) edit your Search Result web Part --> Change Query

14) on the Basic tab Select a Queary DropDown "CustomSearch" Which we created on Step 10 now Click okay

15) Okay

16) Save Page and Try to Search any Keyword

Let me know if this work for you or not

Best

Sunit Patil

Skype ID: Sunitonline