While configuring the Log Storage quotas for the Palo Alto Networks firewall, under Device > Setup > Management > Logging and Reporting Settings. You might encounter following errors when trying to commit:
Error: configured traffic quota of 0 MB is less than the minimum 32 MB. Invalid configuration. Please fix errors and try again. Commit Failed
Error: configured trsum quota of 0 MB is less than the minimum 32 MB. Invalid configuration. Please fix errors and try again. Commit Failed
Resolution
Navigate to Device > Setup > Logging and Reporting Settings > Log Storage Quota > Traffic
Make sure the Traffic Quota is set up as 32 MB and the Traffic Summary Quota is set up as at least 1.6% to meet the 32 MB minimum value, as shown below. This is the minimum value required