3GPP Scout / Reference / 5GSM causes / 5GSM cause #87

TS 24.5015GSM cause

5GSM cause #87: QoS differentiation for non-3GPP device identifier(s) not available

TS 24.501 V20.1.0Clause 9.11.4.2Value 87 (bits 0101 0111)Checked 2026-10-15

In plain words

The network sends this cause when one or more requested non-3GPP device identifiers are not available for the UE.

Our summary of the spec text quoted below.

What the spec says

Name in the cause table

QoS differentiation for non-3GPP device identifier(s) not available

Source: 3GPP TS 24.501 V20.1.0, clause 9.11.4.2, table 9.11.4.2.1. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: 24501-k10.zip in the 3GPP archive.

When it is used

This 5GSM cause is used by the network to indicate that one or more non-3GPP device identifiers requested are not available for the UE.

Source: 3GPP TS 24.501 V20.1.0, clause B.1. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: 24501-k10.zip in the 3GPP archive.

How this page was made

3GPP Scout built this page from TS 24.501 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.