The following document helps to make multi-environment applications (Services which will run in digit namespace but store its data in state-specific namespaces of DB based on tenant-id) central instance compatible. These services include the likes of
...
Billing-service
Collection-service
workflow-service
egov-apportion-service
egov-hrms
All the municipal registeriesProperty-services
TL-services
PGR-services
...
Billing-service
bpa-services
echallan-services
firenoc-services
land-services
noc-services
sw-services
ws-services
Any service that needs to share its data among multiple DB schemas can be added to the above category.