import fails with ora error 959 :tablespace 'NSPIRES_AT_DATA' does not exist

I am migrating data from 10.2.0.4 to 11.2.0.2. I am using data pump for most of the schema but there are three that hold xml data that I need to do with regular exp/imp.

The export process does not present problems but the import fails with the error:  IMP-00003: ORACLE error 959 encountered

ORA-00959: tablespace 'NSPIRES_AT_DATA' does not exist

These are the parameters I am using:

FROMUSER=NSPIRES_AT

TOUSER=NSPIRES_AT

FILE=expall_NSPIRESAT.dmp

LOG=impall_NSPIRESAT.log

RECORDLENGTH=65535

FEEDBACK=1000

CONSTRAINTS=N

INDEXES=N

GRANTS=N

IGNORE=Y

DESTROY=Y

I have done this process several times using the same parameters and had never had this problem. I must be missing something - Help would be most welcomed