Error Message Listing

Explanations of some error messages you may encounter when using MDSplus

When trying to edit a tree without sufficient privileges, you may see the message:

BIRCH$ traverser -tree nstx -shot -1 -edit
Tree /nstx/ shot /-1/ does not exist.  Create?(Y/N) n

If the tree does in fact already exist, the problem is likely to be that you are not privileged to edit it (add or delete nodes). This is usually a VMS file protection issue. You probably need to be granted an ACL identifier for this tree.