3GPP Scout / Reference / EMM causes / EMM cause #80

TS 24.301EMM cause

EMM cause #80: Disaster roaming for the determined PLMN with disaster condition not allowed

TS 24.301 V20.1.0Clause 9.9.3.9Value 80 (bits 0101 0000)Checked 2026-10-15

In plain words

The UE has requested an attach for disaster roaming service for the UE determined PLMN with disaster condition. The network sends this cause in a PLMN when the MME determines it does not support providing that service to the UE for the UE determined PLMN.

Our summary of the spec text quoted below.

What the spec says

Name in the cause table

Disaster roaming for the determined PLMN with disaster condition not allowed

Source: 3GPP TS 24.301 V20.1.0, clause 9.9.3.9, table 9.9.3.9.1. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: 24301-k10.zip in the 3GPP archive.

When it is used

This EMM cause is sent by the network in a PLMN where the UE has requested an attach for disaster roaming service for the UE determined PLMN with disaster condition, but the MME determines that it does not support providing disaster roaming services to the UE for the UE determined [...]

Source: 3GPP TS 24.301 V20.1.0, clause A.2. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: 24301-k10.zip in the 3GPP archive.

Same cause in 5GS (TS 24.501)

TS 24.501 defines the corresponding cause for 5GS. Its page quotes the 5GS wording.

How this page was made

3GPP Scout built this page from TS 24.301 V20.1.0 as indexed on 2026-10-15. The quotes are copied from the spec, and code checks each one against the stored text and the 3GPP archive file before publishing. The plain-words line was written by an AI model (GPT-6 Sol) and checked against the quotes by a second AI model from another company (Claude Opus 5.5). The official 3GPP text governs.