argument

X-match Attributes. Valid Values:

• "x-match:all": Default Value, All the Message Header of Key-Value Pairs Stored in the Must Match.

• "x-match:any": at Least One Pair of the Message Header of Key-Value Pairs Stored in the Must Match. NOTE: This Parameter Applies Only to Headers Exchange Other Types of Exchange Is Invalid. Other Types of Exchange Here Can Either Be an Arbitrary Value.