Generally means it's a good idea to call SAS tech support (it's free!)
You can try starting a fresh session (quit Enterprise Guide, then reopen it and reconnect to the server) to see if the problem repeats.
You didn't show your DATA step code that caused this error, can you post the log showing the data step and the error message? That might help point to some possibilities.
BASUG is hosting
free webinars Next up:
Don Henderson presenting on using hash functions (not hash tables!) to segment data on June 12. Register now at the Boston Area SAS Users Group event page:
https://www.basug.org/events.