Update copy-activity-overview.md

AndyStevenson7 · web-flow · commit 4ecce81f6c44 · 2022-08-05T12:13:37.000+01:00
Added a tip to remind users to explicitly add any additional columns, to column Mapping.  This caught me out!
diff --git a/articles/data-factory/copy-activity-overview.md b/articles/data-factory/copy-activity-overview.md
@@ -238,6 +238,8 @@ To configure it programmatically, add the `additionalColumns` property in your c
     }
 ]
 ```
+>[!TIP]
+>After configuring additional columns remember to map them to you destination sink, in the Mapping tab.
 
 ## Auto create sink tables
 

Original file line number	Diff line number	Diff line change
@@ -238,6 +238,8 @@ To configure it programmatically, add the `additionalColumns` property in your c
`238`	`238`	`}`
`239`	`239`	`]`
`240`	`240`	```
	`241`	`+>[!TIP]`
	`242`	`+>After configuring additional columns remember to map them to you destination sink, in the Mapping tab.`
`241`	`243`
`242`	`244`	`## Auto create sink tables`
`243`	`245`