You can find the SCSI error in IBM AIX "errpt -a", detailed information as below...
SCSI ERR1
Error Description: ADAPTER ERROR
This error is logged by the SCSI adapter device driver in the event of a permanent hardware error involving the SCSI adapter, the system I/O bus and related hardware, or both. Either these errors cannot be retried, or all allowed retries have been exhausted. It is unlikely that any operations to the SCSI adapter can continue after one of these errors.
Adapter Return Code: The sense data consists of failure data, which is analyzed by the Diagnostic Programs.
SCSI ERR2
Error Description: ADAPTER ERROR
This error is logged by the SCSI adapter device driver in the event of a potentially catastrophic hardware error involving the SCSI adapter, the system input/output bus and its related hardware, or both. Either these errors cannot be retried, or all allowed retries have been exhausted. Since these errors are not necessarily catastrophic, operations may or may not continue successfully after the error.
SCSI ERR3
Error Description: MICROCODE PROGRAM ERROR
This error is logged by the SCSI adapter device driver in the event of a permanent unknown adapter microcode error. Either these errors cannot be retried, or all allowed retries have been exhausted. It is unlikely that any operations to the SCSI adapter can continue after one of these errors.
SCSI ERR4
Error Description: MICROCODE PROGRAM ERROR
This error is logged by the SCSI adapter device driver in the event of a potentially catastrophic unknown adapter microcode error. Either these errors cannot be retried, or all allowed retries have been exhausted. Since these errors are not necessarily catastrophic, operations may or may not continue successfully after the error.
SCSI ERR5
Error Description: SOFTWARE PROGRAM ERROR
This error is logged by the SCSI adapter device driver in the event of a permanent catastrophic device driver logic error. Either these errors cannot be retried, or all allowed retries have been exhausted. It is unlikely that any operations to the SCSI driver can continue after one of these errors.
SCSI ERR6
Error Description: SOFTWARE PROGRAM ERROR
This error is logged by the SCSI adapter device driver in the event of a potentially catastrophic device driver logic error. Either these errors cannot be retried, or all allowed retries have been exhausted. Since these errors are not necessarily catastrophic, operations may or may not continue successfully after the error.
SCSI ERR7
Error Description: UNDETERMINED ERROR
This error is logged by the SCSI adapter device driver in the event of a potentially permanent kernel service routine failure. Either these errors cannot be retried, or all allowed retries have been exhausted. It is unlikely that any operations to the SCSI adapter device driver can continue after one of these errors.
SCSI ERR8
Error Description: UNDETERMINED ERROR
This error is logged by the SCSI adapter device driver in the event of a potentially permanent kernel service routine failure. Either these errors cannot be retried, or all allowed retries have been exhausted. Since these errors are not necessarily catastrophic, operations may or may not continue successfully after the error.
SCSI ERR9
Error Description: POTENTIAL DATA LOSS CONDITION
This error indicates that there may be downlevel SCSI equipment installed. A potential data loss condition is possible.
SCSI ERR10
Error Description: TEMPORARY SCSI BUS ERROR
This error is logged by the SCSI device driver in the event of a potentially catastrophic SCSI bus error including cabling, device adapter, or related hardware. Since these errors are not necessarily catastrophic, operations may or may not continue successfully after the error.