Full backup (copy2 with infinity retention) failing with error code 96.

Hi,

Full backup jobs whose retention period is infinity is failing with error code 96 even though there are tapes in scratch pool and their expiration date is blank.

All the first copy with 2 months retension are completed without any error. This is happening only for full backups. and also for a particular policy.

Please suggest how to avoid this error.

Thank you