FPDS Query Library
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Last Modified By

Username of the user account that most recently changed the IDV transaction record. It identifies the last editor of the record, not necessarily the original creator or the contracting officer.

Family: IDV
Category: General
Data Type: string
Semantic Type: attribute
Mapping: flattened_fpds_xml_field
AI Confidence: high

Variable Overview

FPDS Query Variable
content__IDV__transactionInformation__lastModifiedBy
Title
Last Modified By
FPDS Path
IDV/transactionInformation/lastModifiedBy
Description
Username of the user account that most recently changed the IDV transaction record. It identifies the last editor of the record, not necessarily the original creator or the contracting officer.
Business Meaning
This field helps trace record stewardship and data maintenance activity in FPDS. Analysts can use it to investigate who updated a record, support audit reviews, and distinguish substantive procurement actions from later administrative corrections.
Example Value
FPDSADMIN
Observed Non-Null Count
5,862,556

FPDS Compare

FPDS Query Variable
content__IDV__transactionInformation__lastModifiedBy
FPDS XML Path
IDV/transactionInformation/lastModifiedBy
Mapping Type
flattened_fpds_xml_field
Comparison Summary
FPDS Query flattens the original nested FPDS XML path 'IDV/transactionInformation/lastModifiedBy' into the SQL-ready variable 'content__IDV__transactionInformation__lastModifiedBy'.

Use Cases

  • Dictionary lookup and field explanation
  • SQL filtering and grouping
  • Analytical reporting and reusable query building

Common Usage

  • audit and data-quality reviews
  • identifying system or user accounts that edit FPDS records
  • filtering or grouping records by record maintenance source

Common Mistakes

  • assuming it identifies the contractor or award recipient
  • using it as a measure of who executed the procurement action

Query Guidance

Use the field as a plain text attribute in WHERE, GROUP BY, or DISTINCT clauses when analyzing record maintenance patterns. Normalize case if needed, and be cautious about matching exact usernames because values may reflect different account conventions, including administrative or automated users.

SQL Examples

Preview values

SELECT
    content__IDV__transactionInformation__lastModifiedBy AS last_modified_by
FROM fpds.data
WHERE content__IDV__transactionInformation__lastModifiedBy IS NOT NULL
LIMIT 25

Top values

SELECT
    content__IDV__transactionInformation__lastModifiedBy AS value,
    count() AS record_count
FROM fpds.data
WHERE content__IDV__transactionInformation__lastModifiedBy IS NOT NULL
GROUP BY value
ORDER BY record_count DESC
LIMIT 25

Each dictionary item includes SQL-ready examples generated alongside the variable metadata, allowing immediate use in FPDS Query for filtering, aggregation, and analysis.