Conversion error from ustring to string

[developeretl]

Hi,
Im getting the following error
When binding output schema variable "transfer0": When binding output interface field "COL1" to field "COL1": Implicit conversion from source type "ustring[3]" to result type "string[3]": Converting ustring to string using codepage ISO-8859-1.

I didn't change the sql type as it is im populating but im getting the error. Can you please tell me how to eliminate this error.

[ray.wurlod]

Make sure the Extended property ("Unicode" or "") consistent.

[natashab]

The Unicode property for COL1 is set in the input link while it's not set in the output link in a particular stage.So either use it or remove it throughout the job flow(from src to trg ) .