we have a ssn number where we are replacing the numeric format of SSN to xxxxxxxx, this is from DB to file, DB i see plain text when generating the file this replaced with xxxxxxxx, I checked in Mapping , Model , Knowledge Modules ,but i am unable to identify where the transformation is happening , i checked Mapping , Model , Knowledge Modules, topolgy Physical connection , is there any other place to check apart from this places, I am new to the ODI