20551   zERR CANT MOD DATA STREAM METADATA

Source:  NSS, Common Layer, Data Stream

Explanation:  The meta-data for the data stream cannot be modified.

Possible Cause:  NSS contains many types of beast objects such as files, directories, volumes, resources forks, or extended attributes.

Some of these beast objects, such as extended attributes, do not allow their stream meta-data to be directly modified.

Action:  Perform the modification on a type that is allowed.