In this post, you’ll learn about the SQL error code 3266 in InterSystems IRIS database the reason why you are receiving the TSQL message when using the InterSystems IRIS data platform
Error Code :
3266
Reason for the Error code 3266 in InterSystems IRIS DBMS
The backup data in ‘%ls’ is incorrectly formatted. Backups cannot be appended, but existing backup sets may still be usable.