Stand-In and Online Response Differences

The main differences between a Stand-in Response and an Online Response occur in the following fields:

Field #Field NameUsage
3Account DataOnline:
    Token for the account number (from the Fusebox response)
    If a token is used for authorization, the token is returned. Otherwise, this field contains the encrypted version of the account number.
    4Expiration DateStand-in:
      If the card was keyed, contains encrypted Expiration Date.
    6Authorization CodeOnline:
      Approval code returned by Fusebox.
      “SN:” followed by the Serial Number of the PIN Pad.
    1003Gateway Response CodeStand-in:
    1010Gateway Response MessageStand-in:
      “*SLR STAND-IN.“
    1379EMV Receipt Field ListOnline:
      From Fusebox, for use on declines (see the Fusebox EMV section under “EMV Receipts and Data Retention” for more information).
      From Simplify (same format as online).


    A value of “*\SLR STAND-IN.” in field 1010 does not mean that Simplify has performed stand-in; it indicates that Simplify did not receive a Host Response before timing out. The POS performs Stand-in by deciding whether or not to approve the transaction locally.