diff --git a/Tagging-Merchants.md b/Tagging-Merchants.md
index b783a3a..00c020b 100644
--- a/Tagging-Merchants.md
+++ b/Tagging-Merchants.md
@@ -54,7 +54,7 @@ If taking on issues submitted from the Add Location form, you can and should mak
 
 ### Source of Data
 
-Each submission will contain information about the source of the data so that taggers will know if it was completed by the business owner, a customer, or by another method. Some submissions may also include contact information which can be used to follow-up if further information is required.
+Each submission will contain information about the source of the data so that taggers will know if it was completed by the business owner, a customer, or by another method. Some submissions may also include contact information which can be used to follow-up if further information is required. `Local Knowledge` should not be used unless you have have this first hand.
 
 ## Tagging Guidance