Fixed Width File

Overview of XMPro's Fixed Width File Agents, including the Reader and Writer Action Agents. Learn how to read, provide, and export data using fixed-width text files in Data Streams.

The Fixed Width File agents allow you to include data from and write data to fixed-width text (.txt) files in your data stream.

A fixed-width file is a plain text file with pre-defined column widths. Each row of the file is a data record. Each record consists of one or more fields, each padded with spaces to maintain the pre-defined column widths. These files are an older format used for exchanging data between different applications.

The Fixed Width File Reader Action Agent allows you to include data from fixed-width text files in your data stream. The Agent can be used with a File Listener to batch-process data from fixed-width files and turn it into actionable data. Simply drag and drop files into a folder monitored by the File Listener, and the Fixed Width File Reader will process them.

The Fixed Width File Writer Action Agent allows you to convert structured data from your data stream into fixed-width text files. This is useful when exporting data to legacy systems or external applications needing this specific format. The Agent supports both file system output and Base64 encoded output for integration scenarios.

Pre-requisites

Fixed-width text files processed by the Reader Action Agent must match the configured column definition and encoding.

Current Version

• Download the Fixed Width File Reader Action Agent v1.03 (Last Update: 14 Nov 2025)

• Download the Fixed Width File Writer Action Agent v1.01 (Last Update: 16 Oct 2025)

Fixed Width File Reader Release Notes

Version	Date	Description
1.03	21 Nov 2025	Support a base64 string as the xml file source. Support appending the input payload to the file content. Standardized property names.
1.01	22 Jan 2025	Repackaged to translate the Agent's properties.
1.00	05 Dec 2023	Initial Release.

Fixed Width File Writer Release Notes

Version	Date	Description
1.01	16 Oct 2025	Initial Release.