---
title: What are the port colours and what do they mean?
description: "Port colours indicate the outcome of a node: **Green** = success / delivered / true / valid; **Red** = failed / false / invalid; **Blue** = continue (next step regardless). For example, Send WhatsApp has Delivered (green), Failed (red); Condition has True (green), False (red); Ask…"
url: "https://www.smsgatewaycenter.com/blog/kb/what-are-the-port-colours-and-what-do-they-mean/"
updated: "2026-03-21"
category: WhatsApp Business API / Workflow Builder
---

# What are the port colours and what do they mean?

Port colours indicate the outcome of a node: **Green** = success / delivered / true / valid; **Red** = failed / false / invalid; **Blue** = continue (next step regardless). For example, Send WhatsApp has Delivered (green), Failed (red); Condition has True (green), False (red); Ask nodes have Valid (green), Invalid (red). Connect each port to the correct next node so your branching and error handling work as intended.

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