List out the important characteristics of SOAP envelop element.

The SOAP envelope indicates the start and end of the message so that the receiver knows when the entire message has been received. The important characteristics of SOAP envelop are:

• It has a root Envelop element, which is a mandatory part of the SOAP.
• SOAP element should not contain more than one header. Also, it should appear as the first part of the envelope.
• Envelop version changes with the upgradations in SOAP version.
• We add ENV as a prefix and envelop element to SOAP envelops.
• The optional SOAP encoding is also specified using a namespace.