XI Adapter Engine is stuck

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Symptom
Your J2EE Engine is stuck. XI/PI Message flow through the Adapter Framework has stopped. On 6.40 and 7.0 systems logon to the Visual Administrator isn’t possible any longer, in 7.1 systems SAP NetWeaver Administrator hangs. System startup failes, hangs or takes very long.
Other terms
Application Thread Manager, Max Thread Count, Messaging System, [...]

XI Adapter Framework DynamicConfiguration Module

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Symptom
Information for the XI AF DynamicConfiguraiton Module
Other terms
XI AF, DynamicConfiguration Module
Reason and Prerequisites
XI Adapter Framework provides a standard module for processing the dynamic configuration header that is used to represent the Adapter Specific Message Attributes (ASMA).
This module can insert or delete some specific attributes, read some XI message properties into some attributes, or [...]