Diagnosis
The possible causes are:
1) Your pricing procedure does not include a condition type which isconfigured to carry the price protectable price.
(2) Such a condition type exists, but no condition records aremaintained for it.
(3) Such a condition type exists, has condition records, but thecondition type is inactive.

Procedure for System Administration
Check for the possible causes above and take remedial action asrequired.