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  • Loopback mode differs from general testing (VTS -> Issuer host or Acquirer host -> VTS) by adding a layer between host and VTS. This layer specifically performs aditional field edits validations, PIN translations and captures data for clearing/settlement file generation, when using direct VTS connection - user is not able to generate interchange files and perform on-the-fly field edits validation.

    Answered By:
    volosnikpk

2001

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