Constraints

This section describes the limitations and constraints on using DEW.

**Table 1** Specifications
Resource Type	Specification	Description
Secret	You can create a maximum of 500 secrets.	To increase the secret specifications, contact customer service.
Event	You can create a maximum of 30 secret events.	To increase the event specifications, contact customer service.
Rotated secret version	Each secret supports a maximum of 20 versions.	To increase the rotated secret version specifications, contact customer service.
Instances in a cryptographic service cluster	Each cryptographic service cluster can contain a maximum of 20 instances.	To increase the specifications, contact customer service.
Tag	You can add at most 20 tags to a DEW resource.	To increase the tag quota, contact customer service.
KMS API calls	KMS keys can be called through APIs for 20,000 times free of charge per month.	To increase KMS API calls, contact customer service.

You can log in to the console to view default quotas. For details, see Viewing Quotas. To apply for a larger quota, submit a service ticket.

**Table 2** Quota
Resource Type	Default Quota	Adjustable	Description
CMKs	You can create at most 100 custom keys, excluding default keys. Replica keys take up the custom key quota in the region.	Yes To apply for a higher quota, submit a service ticket.	For details, see Creating a Custom Key.
Grants per CMK	A maximum of 100 grants can be created for a CMK.	Yes To apply for a higher quota, submit a service ticket.	For details, see Creating a Grant for a Custom Key.