Symptoms
Several duplicate domain renewal orders were generated for a domain registered via the OpenSRS plug-in and the customer was charged accordingly.
Cause
Software issue PBAS-29868 that was fixed since OBAS 4.5.4 release.
Resolution
Upgrade to 4.5.4 as described in How to upgrade OBAS system to the latest available version.
If upgrade is not an option for you for some reason, please contact Odin support to resolve the issue.