ORA-19613: datafile string not found in backup

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ORA-19613: datafile string notfound in backup set
Cause: The indicated file could not be restored, because itis not in this backup set.
If the file number is zero, then this refers to the control file.
Action: Thismessage is issued when the directory from the first backup piece is
read and one or more files named for restoration were not found. The restore
conversation is still active, but no data has been read and you must supply thefirst
backup piece of a backup set that contains all of the requested files.