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400-level error codes

The 400-level error codes (codes 400 - 499) are returned in the TU4.0 or TU4.1 fixed format response (FFR) due to invalid data in the subject identification (name or address, for example) segments.

The following error code table is derived from full TransUnion User Guides. The latest User Guides are available in this site’s Document Repository.

Code Description Common Reasons for Error Troubleshooting Tips
401 Surname missing or invalid. Consumer's surname is missing or misformatted within the fixed format inquiry (FFI).
  • Refer to the TransUnion TU4.0 or TU4.1 manual for proper specifications for the NM01 / NM11 segment.
  • Check to ensure name data is in all UPPERCASE.
  • Most services require surname input.
403 First name missing or invalid. Consumer's first name is missing or misformatted within the fixed format inquiry (FFI).
  • Refer to the TransUnion TU4.0 or TU4.1 manual for proper specifications for the NM01 / NM11 segment.
  • Check to ensure name data is in all UPPERCASE.
  • Most services require first name input.
411 Current address house number is missing or invalid. Consumer's house number within the current address is missing or misformatted within the fixed format inquiry (FFI).
  • Refer to the TransUnion TU4.0 or TU4.1 manual for proper specifications for the AD01 / AD11 / UA11 segment.
  • If the input includes a P.O. Box or a rural route, use the POB or RR number as the input house number.
  • Most services require House Number input.
415 Current address city name missing or invalid. Consumer's city name within the current address is missing or misformatted within the fixed format inquiry (FFI).
  • Refer to the TransUnion TU4.0 or TU4.1 manual for proper specifications for the AD01 / AD11 / UA11 segment.
  • Check to ensure city data is in all UPPERCASE.
  • Most services require city name input.
417 Current address state code missing or invalid. Consumer's state code within the current address is missing or misformatted within the fixed format inquiry (FFI).
  • Refer to the TransUnion TU4.0 or TU4.1 manual for proper specifications for the AD01 / AD11 / UA11 segment.
  • Check to ensure data is in all UPPERCASE.
  • Requires the 2-character state code.
  • Most services require state code input.
419 Current address ZIP Code missing or invalid. Consumer's ZIP Code within the current address is missing or misformatted within the fixed format inquiry (FFI).
  • Refer to the TransUnion TU4.0 or TU4.1 manual for proper specifications for the AD01 / AD11 / UA11 segment.
  • Most services require ZIP Code input.
461 Account Reporting Review: subscriber / inquiry link not established. No link has been set for the inquiry and reporting subscriber codes.
  • Refer to the TransUnion TU4.0 or TU4.1 manual for proper specifications for the RS01 segment.
  • Contact us to verify correct subscriber/inquiry codes are linked within the TransUnion system.
472 Customer identifier missing or invalid. Customer's identifying value is missing or misformatted in the fixed format inquiry (FFI).
  • Refer to the TransUnion TU4.0 or TU4.1 manual for proper specifications for the CD01 segment.
  • Ensure you have the CD01 segment coded if you are using the TransUnion Net Access (TUNA) connectivity method.
473 Customer identifier qualifier missing or invalid. Customer's identifying qualifier is missing or misformatted in the fixed format inquiry (FFI).
  • Refer to the TransUnion TU4.0 or TU4.1 manual for proper specifications for the CD01 segment.
  • This field needs to be populated for successful transactions using the TransUnion Net Access (TUNA) connectivity method.
  • Populate with 5 or 6, depending on what you use in the Customer Identifier field.
  • Ensure you have the CD01 segment coded if you are using the TransUnion Net Access (TUNA) connectivity method.
478 Insufficient input. The minimum required information for your request is not present.
  • Recheck input data to ensure that required input fields for the service requested were entered and segments are properly formatted.
  • Refer to the TransUnion TU4.0 or TU4.1 manual for proper specifications for all segments.
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