So this error is occurring because you have a value in your source for the AppID column that is not valid for your AppID column in the destination.
Some possible examples:
- You're trying to insert a 10 character value into an 8 character field.
- You're trying to insert a value larger than 127 into a tinyint field.
- You're trying to insert the value 6.4578 into a decimal(5,1) field.
SSIS is governed by metadata, and it expects that you've set up your inputs and outputs properly such that the acceptable values for both are within the same range.