Bug ID 964869: Error in apm log: apmd_plugin.cpp func: "de_serialize_tmm_request()" line: 281 Msg: didn't find agent /Common/ad_ldap_auth_act_ldap_query_subsession_ag.

Last Modified: Oct 19, 2025

Affected Product(s):
BIG-IP APM(all modules)

Known Affected Versions:
16.1.0, 16.1.1, 16.1.2, 16.1.2.1, 16.1.2.2, 16.1.3, 16.1.3.1, 16.1.3.2, 16.1.3.3, 16.1.3.4, 16.1.3.5, 16.1.4, 16.1.4.1, 16.1.4.2, 16.1.4.3, 16.1.5, 16.1.5.1, 16.1.5.2, 16.1.6, 16.1.6.1

Opened: Nov 14, 2020

Severity: 3-Major

Symptoms

The following errors appear in apm log: err apmd[12485]: 01490000:3: apmd_plugin.cpp func: "de_serialize_tmm_request()" line: 281 Msg: didn't find agent /Common/xxxxxxxxx err apmd[12485]: 01490000:3: apmd_plugin.cpp func: "serialize_apmd_reply()" line: 438 Msg: AccessV2 agent execution error 5

Impact

The client receives 503 errors for the request when this error happens.

Conditions

-- AAA LDAP Auth that user pool with DC controller. -- PRP with LDAP Auth and LDAP Query agents that use this AAA LDAP Auth object.

Workaround

None

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips