I am getting whay seems to be a difficult error to resolve. When running a look up task I am getting "Row yielded no match during lookup" error. I have gone through the data and resolved the following that was suggested on various message boards .
Rebuilt the whole data flow
Ltrim and Rtrim the data
Replaced Null with ''
Checked the data to make sure that case sensitivty is not an issue.
If I run the data today and then run the data a second time in the same day the lookup works fine.
Does anyone know of anything else that could be causing an issue?