Creating an Apply Envelope MBM error process Creating an Apply MBM Envelope error process requires extra fields to be specified. Click the Error Processes tab. Click + and select Apply Envelope. Select MBM Envelope template. Specify this information: Envelope encoding Specify the type of encoding that is used in the envelope. Schema Specify the schema that is used in the envelope. To Address Specify the destination of the envelope. From Address Specify the origin address of the envelope. URI Specify the Uniform Resource Identifier that is used in the envelope. Click Add.