How to build a data flow?

Question

I am running Visual Studio 2008, the SSIS Tutorial described on: http://msdn.microsoft.com/en-us/library/ms167106.aspx

I finished all of the tasks but am getting following errors:

Error 1 Validation error. Extract Sample Currency Data: Extract Sample Currency Data: input column "CurrencyAlternateKey" (123) has lineage ID 55 that was not previously used in the Data Flow task. Lesson 1.dtsx 0 0
Error 2 Validation error. Extract Sample Currency Data SSIS.Pipeline: input column "CurrencyAlternateKey" (123) has lineage ID 55 that was not previously used in the Data Flow task. Lesson 1.dtsx 0 0

Can you tell what I need to do to make this build without errors?

Answer 1

I often will get this error if I copied a data flow and pasted it to create another data flow, and then made some modifications to it. SSIS doesn't like copying and pasting often times, especially data flows.