KB-2439 APNX-1-4552-018: Deployment REST API returns file size exceeded error when importing packages larger than XX MB

Symptoms

1. Deployment REST API POST request to /suite/deployment-management/v2/deployments returns the following error (error code: APNX-1-4552-018):

   "The file cannot be uploaded because the file has exceeded the size limit of XX MB"

2. Issue occurs when attempting to deploy application packages using the Deployment REST API with packages larger than XX MB

Cause

The file upload size limit configured in custom.properties via the property resources.appian.ac.collaboration.MAX_UPLOAD_FILE_SIZE is set to XXXX bytes (XX MB), which is lower than the size of the package being deployed.

Action

1. Navigate to <APPIAN_HOME>/conf/custom.properties.
2. Locate the following property: resources.appian.ac.collaboration.MAX_UPLOAD_FILE_SIZE
3. Update the value to accommodate your deployment package size (e.g., 104857600 for 100 MB)
4. Restart the Appian application server for the changes to take effect

Note: The default file size limit is 1 GB as documented at File Upload Component - Uploaded File Size Limit. The maximum limit for this property is 2147483647 (32-bit integer). Consider the following when setting values greater than 1 GB: disk usage could spike, additional time may be required to upload larger files, potential for quick growth in disk usage, and potential performance degradation.

Affected Versions

This article applies to all versions of Appian.

Last Reviewed: November 2026