salary key number
Salary Key â Income Verification Provide the 6-digit number (salary key) in this field to the party requesting your salary information. A separate salary key is required for each party requesting verification. Important to note :The salary key expiresafter 3 days OR when another salary key is created 1/15/2010.alary Key â Income Verification Provide the 6-digit number (salary key) in this field to the party requesting your salary information. A separate salary key is required for each party requesting verification. Important to note :The salary key expiresafter 3 days OR when another salary key is created 1/15/2010.