---
title: What does DLT_REJECT (Invalid PEID) mean?
description: "Your message was **rejected due to an invalid PE ID** (Principal Entity ID) on DLT - for example the PE ID is wrong, not registered, or does not match your entity. The message was not sent by operator. **What you…"
url: "https://www.smsgatewaycenter.com/blog/kb/what-does-dlt_reject-invalid-peid-mean/"
updated: "2026-05-31"
category: "Bulk SMS / Errors & Error Codes"
---

# What does DLT_REJECT (Invalid PEID) mean?

Your message was **rejected due to an invalid PE ID** (Principal Entity ID) on DLT - for example the PE ID is wrong, not registered, or does not match your entity. The message was not sent by operator.

**What you can do:** Use the correct PE ID registered for your entity on DLT. Check your DLT registration and fix the PE ID in your request or account settings.

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