As the library is processing an import operation, status messages are reported to all attached hosts. This results in OAM issuing message CBR3750I. Status messages are issued at the following key processing points:

• When import processing begins for a stacked volume
• When the library completes importing the requested logical volumes on a stacked volume (that is, the volumes are in the insert category to be processed by the host)
• When the import processing is complete for a stacked volume (that is, all of the requested logical volumes on the stacked volume have been processed by OAM)
• When processing completes for the import operation