[Yandex Cloud documentation](../../index.md) > [Yandex Key Management Service](../index.md) > [Concepts](index.md) > Quotas and limits

# Quotas and limits in Key Management Service

Key Management Service has the following limits:

* [_Quotas_](https://console.yandex.cloud/cloud?section=quotas) are organizational constraints that can be changed by contacting technical support.
* _Limits_ are technical constraints of the Yandex Cloud architecture. You cannot change the limits.

If you need more resources, you can increase your quotas in one of the following ways:

* [Make a request to increase your quotas](https://console.yandex.cloud/cloud?section=quotas).
* Contact [support](https://center.yandex.cloud/support) and specify which quotas you want increased and by how much.

To have your request processed, you must have the `quota-manager.requestOperator` [role](../../iam/roles-reference.md#quota-manager-requestoperator) or higher, e.g., `editor` or `admin`.

You can manage your quotas with [Cloud Quota Manager](../../quota-manager/quickstart.md).

#### Quotas {#kms-quotas}

#|
|| Type of limitation | Value ||
|| Number of [symmetric keys](key.md)
`kms.keys.count` | 100 ||
|| Number of asymmetric [encryption](asymmetric-encryption-key.md) keys
`kms.asymmetricEncryptionKeys.count` | 100 ||
|| Number of asymmetric [signature](asymmetric-signature-key.md) keys
`kms.asymmetricSignatureKeys.count`| 100 ||
|#


#### Limits {#kms-limits}

Type of limitation | Value
----- | -----
Number of versions per key | 100
Maximum amount of data to encrypt with the [encrypt](../api-ref/SymmetricCrypto/encrypt.md) operation | 32 KB