# General

* [What are the security aspects of on-premise deployment?](https://docs.opshub.com/v7.215/help-center-index/faqs/general-faqs/security-aspects)
* [How to know which system/entity/version are supported ?](https://docs.opshub.com/v7.215/help-center-index/faqs/general-faqs/supported-system-entity-version)
* [How to migrate from HSQL to other enterprise database?](https://docs.opshub.com/v7.215/help-center-index/faqs/general-faqs/hsql-other-database)
* [How to move application server from one machine to other?](https://docs.opshub.com/v7.215/help-center-index/faqs/general-faqs/move-application-server)
* [Are there any vulnerabilities in OpsHub Integration Manager?](https://docs.opshub.com/v7.215/help-center-index/faqs/general-faqs/vulnerabilities)
* [Not able to see the newly added projects or lookup values, What can be potentials reasons?](https://docs.opshub.com/v7.215/help-center-index/faqs/general-faqs/not-able-to-see-newly-added-projects-or-lookup-values)
* [How to put default value for any mandatory field of destination system?](https://docs.opshub.com/v7.215/help-center-index/faqs/general-faqs/default-value-mandatory-field-target-system)
* [How to do value mapping for lookup type fields ?](https://docs.opshub.com/v7.215/help-center-index/faqs/general-faqs/value-mapping-lookuptype-fields)
* [How to do value mapping for lookup type fields using an Excel sheet ?](https://docs.opshub.com/v7.215/help-center-index/faqs/general-faqs/value-mapping-lookuptype-fields-using-excel-sheet)
* [NullEmptyInvalid values are coming for Mandatory fields in target system from the source system. How to prevent them?](https://docs.opshub.com/v7.215/help-center-index/faqs/general-faqs/nullemptyinvalid-values-are-coming-for-mandatory-fields-in-target-system-from-the-source-system-how)
* [Error: Entity synchronization is failing due to error: OpsHub-012010: Processing Stopped – earlier event(s) for entity have to be processed first.](https://docs.opshub.com/v7.215/help-center-index/faqs/general-faqs/error-entity-synchronization-is-failing-due-to-error-opshub-012010-processing-stopped-earlier-event)
* [Does entity delete operation supported ?](https://docs.opshub.com/v7.215/help-center-index/faqs/general-faqs/does-entity-delete-operation-supported)
* [How to handle synchronization of a synced entity deleted from destination System?](https://docs.opshub.com/v7.215/help-center-index/faqs/general-faqs/handle-synchronization-of-a-synced-entity-deleted-from-destination-system)
* [What is 'Start Polling Time' and its usage in Integration configuration ?](https://docs.opshub.com/v7.215/help-center-index/faqs/general-faqs/start-polling-time-usage-in-integration)
* [How to track one system's entity id and URL in other system ?](https://docs.opshub.com/v7.215/help-center-index/faqs/general-faqs/track-remote-id-link)
* [How to synchronize sub set of data based on criteria ?](https://docs.opshub.com/v7.215/help-center-index/faqs/general-faqs/criteria-sync-data)
* [How to get email notifications of any failure in integration sync ?](https://docs.opshub.com/v7.215/help-center-index/faqs/general-faqs/how-failure-notification-configure)
* [How frequently data is read from source system and synchronize to target system?](https://docs.opshub.com/v7.215/help-center-index/faqs/general-faqs/how-frequently-data-sync)
* [How to add new schedule for integration?](https://docs.opshub.com/v7.215/help-center-index/faqs/general-faqs/add-new-schedule-integration)
* [How to enable OpsHub Integration Manager with HTTPS when it has already been installed with HTTP?](https://docs.opshub.com/v7.215/help-center-index/faqs/general-faqs/enable-oim-with-https)
* [How to remove unnecessary audits to improve audit loading time?](https://docs.opshub.com/v7.215/help-center-index/faqs/general-faqs/how-to-remove-audits)
* [How to enable compression in database?](https://docs.opshub.com/v7.215/help-center-index/faqs/general-faqs/how-to-enable-compression)
* [How to move OpsHub Integration Manager from CentOS to Ubuntu?](https://docs.opshub.com/v7.215/help-center-index/faqs/general-faqs/move-application-server)
* [How to identify between Custom and Default Workflows and their associated integrations?](https://docs.opshub.com/v7.215/help-center-index/faqs/general-faqs/how-to-identify-between-custom-and-default-workflows-and-their-associated-integrations)
* [How to configure cross system linkages between IBM systems?](https://docs.opshub.com/v7.215/help-center-index/faqs/general-faqs/how-to-configure-cross-system-linkage-in-ibm-systems)