Validations in LSMW

Hi All,

I have to validate two fields which will be coming from Data upload file.To acheive this i have maintained the translations and in control data I have uploaed all the possible values.

Now my requirement is that in step no 5 if I have to check values only against the uploaded values else throw an error msg.I am not able to find how to write the logic for the same.

Pls let me know if require more details.

Thnx,

Rag