Check for Duplicates Across Multiple Projects

Overview

Summary

Key Value
Official Name cross-project-duplicate-check-module
Short Description Checks for duplicate records (as defined by a certain number of matching fields) across one or more projects.
Author John Doe <jdoe@somewhere.edu>
Homepage URL https://github.com/vanderbilt-redcap/cross-project-duplicate-check-module
Most Recent Update 2023-10-16
Version Number v1.5
Complexity Low
Setup Time Lengthy
Viewable by Users? Yes
Security Risks None
Does data leave REDCap? No

Description

Checks for duplicate records (as defined by a certain number of matching fields) across one or more projects. If the field matches across multiple records, a duplicate is reported. (Does not currently work for repeating instruments/events.)

User Notes

Enabling the Module (after installation)

To use this module in REDCap, enable the cross-project-duplicate-check-module module in the External Modules page of your REDCap project.

Searching for the module
Search for the "cross-project-duplicate-check-module" module (enlarged image)
Post module installation dialog
"cross-project-duplicate-check-module" module post-installation dialog(enlarged image)

After selecting "Enable a module", you can search for and enable the Check for Duplicates Across Multiple Projects module.

Searching for the module
Search for the "cross-project-duplicate-check-module" module (enlarged image)
Post module installation dialog
"cross-project-duplicate-check-module" module post-installation dialog(enlarged image)

Below is a video walk through using the Check for Duplicates Across Multiple Projects external module REDCap project.

Video walkthrough for the "Check for Duplicates Across Multiple Projects" module (video on Box)

Technical Notes

Common Troubleshooting Issues

  • No known difficulty points

Module Setup Notes

  1. This module requires a secondary project, creation of new fields in the REDCap project and configuration within the external module configuration page

Updated on August 7, 2025