Property Group String Truncation in UI for VCF Automation

Products

• VCF Private AI Services
• VCF Automation

Issue/Introduction

When configuring constant property groups in VMware Cloud Foundation (VCF) Automation, string inputs are subject to a character length limitation within the user interface. This article outlines the symptoms, environment, and workarounds for this behavior.

• The UI prevents the entry of characters beyond 1024 in constant property group string fields.
• Input is silently truncated when exceeding the 1024-character limit.
• Backend persistence uses the truncated string, which may cause blueprint deployment failures.

Environment

• VMware Cloud Foundation (VCF) Automation 9.0.x, 9.1.0, 9.1.1

Cause

The input validation logic within the UI erroneously enforces a 1024-character limit on string-type properties. This restriction is not enforced at the API layer.

Resolution

A formal code fix is currently under review. To work around this limitation, use one of the following methods:

1. API Workaround: Use the Automation API to create or edit the property, as the API does not enforce the 1024-character limit. Refer to the in-app API help center under Automation APIs -> Blueprint for documentation.
2. Array Workaround:
   1. In the UI, change the property type to an Array of strings.
   2. Store the full string value in the first index (index 0).
   3. Update all blueprints referencing this property group to point to index 0 of the new property.