quota exceeded error while writing to /group
Ensure that you are writing files to /group/myproject/myusername with the correct group name. This will be your projectid.
/group space is allocated to your project (ie, pawseyXXXX) and not to your individual group (same as your username).
For more information, and how to fix the issue, see Pawsey File Systems and their Usage.
Some file transfer programs remove and/or ignore the group sticky bit. See Transferring Files for more information.