Symptoms

Application deployment (or upgrade) may result in CONFIGURE_FAILED state due to UTFDataFormatException. 

Caused by: java.io.UTFDataFormatException
    at java.io.ObjectOutputStream$BlockDataOutputStream.writeUTF(ObjectOutputStream.java:2125)
    at java.io.ObjectOutputStream$BlockDataOutputStream.writeUTF(ObjectOutputStream.java:1968)
    at java.io.ObjectOutputStream.writeUTF(ObjectOutputStream.java:841)
    at com.tibco.expr.script.ScriptExpressionManager$ScriptExpressionImpl.writeObject(ScriptExpressionManager.java:387)

Cause 

A script defined in the script task is stored in the database as a serializable string object in UTF-8 format. Along with the script definition, any relevant BOM factories are also stored in the same object. Java does not allow such objects to be more than 64k.  

UTFDataFormatException occurs while deploying a TIBCO ActiveMatrix BPM application.

TIBCO recommends to restrict the script definition to 60k. Any script that exceeds this limit should be split into multiple script tasks.