# Ticket issue field migration

The Ticket issue field migration snap-in automates the transfer of custom field values from tickets to new linked issues in DevRev. It checks for empty or undefined fields and fills them with corresponding ticket values based on the field mappings specified in the configuration input. The process features robust error handling, detailed logging, and appends a summary comment to the timeline for easy update tracking.

## Features

- **Automated field migration**: Seamlessly transfers custom field values from tickets to linked issues when the link is newly created.```
- **Field validation**: Verifies whether a field in the issue is empty or undefined before updating, thus avoiding the overwriting of existing values. This ensures the integrity of data during the migration process.
- **Configurable mappings**: The snap-in utilizes user-defined field mappings to determine which fields to migrate. It can handle multi-field input, transferring values from tickets to issues. It processes multiple field mappings in a single execution, thereby minimizing system resource usage.
- **Summary comments**: Logs a summary of the fields processed in the issue timeline, detailing the number of fields updated and skipped. This provides transparency and easy traceability for administrators and teams.

## Installation

For detailed instructions and configuration instructions, refer to the [Ticket issue field migration documentation](https://devrev.ai/docs/automations/ticket-issue-field-migrator).


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Ticket Issue Field Migrator

Automatically migrates custom fields from tickets to issues on linking issue to ticket.