Ability to revert application data edit in case of synchronization with external system fails

Customer is doing integration between Developer Portal and external database system storing customer data like client-id, app name etc. The idea is that if developer portal user do changes e.g. application name in Developer Portal UI then changes should be automatically propagated to external database.
There is already prepared module for that kind of synchronization described below, using hook: hook_ibm_apim_application_update
https://www.ibm.com/support/knowledgecenter/en/SSMNED_5.0.0/com.ibm.apic.devportal.doc/tutorial_syncing_application_credentials.html
https://www.ibm.com/support/knowledgecenter/en/SSMNED_5.0.0/com.ibm.apic.devportal.doc/rapic_portal_custom_modules.html

It is easy to make successful synchronization between those 2 systems but there is a problem to ensure consistency between the systems in case if communication between Developer Portal fails for some reason – e.g. network issue or external database is down.
We are able to show error message to the end user but new invalid data are still exposed.

I can see that following alter hooks are supported:
hook_ibm_apim_application_new_application_clientcreds_alter
hook_ibm_apim_application_reset_application_clientid_alter
hook_ibm_apim_application_reset_application_secret_alter
hook_ibm_apim_application_add_application_alter

so seems like the way forward is to have similar hook:
hook_ibm_apim_application_update_application_alter
where we could overwrite new values with old ones in case of errors or somehow be able to "revert" changes.