For operations that are rejected for reasons related to composed attribute processing (for example, if an add, modify, or modify DN operation is rejected because the composed value would have violated the syntax for the target attribute type, or if an attempt was made to alter a composed attribute value in a way that is not permitted by the plugin), the diagnostic message is returned to the client and included in the access log.

The composed attribute plugin also contains detailed debug logging support. If you encounter unexpected behavior when using the composed attribute plugin, you should enable debugging for the plugin to provide information to help diagnose the problem.