Limitations and Restrictions

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# Limitations and Restrictions

This document describes the limitations and restrictions that apply to Adabas Version 7.4.

## Encrypted Databases

- Azure KMS

- Google Cloud KMS

- HashiCorp Vault KMS

### Azure KMS

The conversion of a database to a version prior to Version 7.2 is not supported for databases using the Azure Key Management System.

### Google Cloud KMS

The conversion of a database to a version prior to Version 7.3 is not supported for databases using the Google Cloud Key Management System.

### HashiCorp Vault KMS

The conversion of a database to any previous version is not supported for databases using the HashiCorp Vault Key Management System.