# Change History

Released On | Description
--- | ---
2021-10-20 | Modified the following content: Modified the type of the available_zones parameter and optimized the networks description in Creating an AS Group and Querying AS Groups.

2019-10-30

Added the following content:

- Added the without_any_tag parameter.

2019-09-30

Added the following content:

- Added the delete_volume parameter to Creating an AS Group, Querying AS Groups, Querying AS Group Details, and Modifying an AS Group.
- Added error code AS.1090 to Error Codes.

2019-05-31

Added the following content:

- Added error code AS.2054 to Error Codes.

Modified the following content:

- Modified the available_zones description in Modifying an AS Group because adding, changing, and deleting the AZ without disabling the AS group is supported.
- Optimized Permissions Policies and Supported Actions.

2019-04-30

Added the following content:

- Added the log_id and status fields to Querying Scaling Action Logs (V2).
- Added error codes AS.9012 and AS.9013 to Error Codes.
- Adjusted the document structure and raised the category level of APIs and error codes.

2019-03-31

Added the following content:

- Added the multi_flavor_priority_policy, multi_az_priority_policy, and instance_config parameters.
- Added error codes AS.1085, AS.1086, AS.1087, AS.1088, AS.2053, and AS.7016 to Error Codes.

Modified the following content:

- Modified error codes AS.1017, AS.1018, AS.1032, AS.1036, AS.2038, and AS.2043 in Error Codes.

2019-02-28

Added the following content:

- Added parameter enterprise_project_id to AS Groups.
- Added Permissions Policies and Supported Actions for fine-grained permissions.

Modified the following content:

- Optimized the document, including the function description and parameter description of each API, as well as the format of request and response examples.

2018-11-30

Added the following content:

- Added parameter protect_from_scaling_down to Querying Instances in an AS Group.
- Added Querying Scaling Action Logs (V2).
- Added error codes AS.2047 and AS.7066 to Error Codes.

Modified the following content:

Modified error codes AS.2015, AS.2035, and AS.2042 in Error Codes.

2018-09-30

Added the following content:

- Added Querying All AS Policies (V2).
- Added error codes AS.1033, AS.1068, AS.1069, AS.1072, AS.1074, AS.1075, and AS.1076 to Error Codes.
- Added API Management, Querying API Versions, and Querying a Specified API Version.
- Added API.

2018-08-30

Modified the following content:

- Added Querying Resources.
- Changed the default cooldown period to 300s.
- Added error code AS.1067 to Error Codes.

2018-08-14 | Modified the following content: Accepted in OTC-3.2/Agile 09.2018.

2018-07-30

Modified the following content:

- Added the AS bandwidth feature.
- Added error codes AS.3050, AS.7061, AS.7062, and AS.7063 to Error Codes.
- Modified error code AS.7047 in Error Codes.

2018-05-30

Modified the following content:

- Added parameter security_groups to AS Configurations.

- Added Performing Operations on AS Policies in Batches.
- Added error codes AS.0026, AS.3045, AS.3046, AS.3047, AS.3048, and AS.3049 to Error Codes.
- Modified error codes AS.3004, AS.3008, AS.3009, AS.3010, and AS.3033 in Error Codes.

2018-04-30

Modified the following content:

- Added description of health_periodic_audit_grace_period to Creating an AS Group.
- Added description of health_periodic_audit_grace_period to Modifying an AS Group.
- Added the scaling_policy_id field to Querying AS Policies.
- Added the scaling_policy_id and scaling_policy_name fields to Querying Scaling Action Logs.
- Added error code AS.2046 to Error Codes.

2018-03-30

Modified the following content:

- Modified the Tag field description in Querying Tags.
- Modified the ResourceTag field description in Querying Tags of a Resource.
- Modified the parameter description, ResourceTag field description, and returned values in Creating or Deleting a Tag.

2018-01-30

Modified the following content:

- Added the field "Description" to Performing Operations on Instances in Batches.
- Added the parameters for forcibly deleting an AS group and their description to Deleting an AS Group.
- Added descriptions of the typical and enhanced ELBs to AS Groups.
- Added the parameter snapshot_id to AS Configurations.
- Optimized descriptions of error codes.

2017-11-30

Modified the following content:

- Added the function of increasing or decreasing the number of instances in an AS group according to the percentage preset in the AS policy.
- Added AS monitoring metrics.
- Added the following error codes: AS.1019, AS.1020, AS.1053 to AS.1061, AS.2042, AS.2043, AS.3035, and AS.3036.
- Added parameters dedicated_storage_id and data_disk_image_id.

2017-09-30

Modified the following content:

- Added instance protection to Querying Instances in an AS Group and Performing Operations on Instances in Batches.
- Added error codes 2010, 4032, 4033, 7044, 7045, 7047, 7048, 7049, and 7050.

2017-07-30 | Modified the following content: Added tag management.
2017-03-30 | Modified the following content: Added error codes AS.2015, AS.2026, AS.2039, and AS.2040 to Error Codes.

2016-12-30

Modified the following content:

- Added parameter EIP to AS Configurations.
- Added parameter AZ to AS Groups.

2016-10-29 | Modified the following content: Added the metadata field to Creating an AS Configuration. Added error codes AS.7011, AS.1049, AS.1050, and AS.1052 to Error Codes.
2016-10-09 | Modified the following content: Modified the volume_type description in Creating an AS Configuration.

2016-08-25

Modified the following content:

- Added regions and terminals for the CCE, RDS, and DNS services.

2016-08-09 | Modified the following content: Changed the maximum user data length to 32 KB in Creating an AS Configuration.

2016-06-30

Modified the following content:

- Modified parameter description in this document because an AS group has supported the binding of multiple ELB listeners.
- Added error codes AS.2037 and AS.3034 to Error Codes.

2016-06-16

Modified the following content:

- Modified descriptions about the alarm_id and scheduled_policy fields in Creating an AS Policy and Modifying an AS Policy.
- Modified content in Quotas.

2016-06-02

Modified the following content:

- Added the instance_id field to instance_config field description in Creating an AS Configuration.
- Added the delete_publicip field to Querying AS Groups and Querying AS Group Details.

2016-05-05

Modified the following content:

- Deleted Parameter Type Description from Appendix, and added parameter type information to each API in the document body.

2016-04-14

Modified the following content:

- Added the Identity and Access Management Service to the region and terminal nodes to Querying AS Configuration Details.

- Modified response examples in Querying AS Configuration Details.

2016-03-09 | This issue is the first official release.