End of support notice: On October 7th, 2026, AWS will discontinue support for AWS IoT Greengrass Version 1. After October 7th, 2026, you will no longer be able to access the AWS IoT Greengrass V1 resources. For more information, please visit [Migrate from AWS IoT Greengrass Version 1](https://docs.aws.amazon.com/greengrass/v2/developerguide/migrate-from-v1.html).

# ListCoreDefinitionVersions


Lists the versions of a core definition.

URI: `GET /greengrass/definition/cores/CoreDefinitionId/versions`

Produces: application/json

## CLI:


```
aws greengrass list-core-definition-versions \
  --core-definition-id <value> \
  [--next-token <value>] \
  [--max-results <value>]  \
  [--cli-input-json <value>] \
  [--generate-cli-skeleton]
```

cli-input-json format:

```
{
"CoreDefinitionId": "string",
"NextToken": "string",
"MaxResults": "integer"
}
```

## Parameters:


[**CoreDefinitionId**](parameters-coredefinitionidparam.md)  
The ID of the core definition.  
where used: path; required: true  
type: string

[**NextToken**](parameters-nexttokenparam.md)  
The token for the next set of results, or `null` if there are no more results.  
where used: query; required: false  
type: string

[**MaxResults**](parameters-maxresultsparam.md)  
The maximum number of results to be returned per request.  
where used: query; required: false  
type: integer

## Responses:


**200** (ListCoreDefinitionVersionsResponse)  
  
 [ ListVersionsResponse](definitions-listversionsresponse.md)   

```
{
"Versions": [
  {
    "Arn": "string",
    "Id": "string",
    "Version": "string",
    "CreationTimestamp": "string"
  }
],
"NextToken": "string"
}
```  
ListVersionsResponse  
A list of versions.  
type: object  
Versions  
Information about a version.  
type: array  
items: [VersionInformation](definitions-versioninformation.md)  
VersionInformation  
Information about a version.  
type: object  
Arn  
The ARN of the version.  
type: string  
Id  
The ID of the parent definition that the version is associated with.  
type: string  
Version  
The ID of the version.  
type: string  
CreationTimestamp  
The time, in milliseconds since the epoch, when the version was created.  
type: string  
NextToken  
The token for the next set of results, or `null` if there are no more results.  
type: string

**400**  
Invalid request.  
 [ GeneralError](definitions-generalerror.md)   

```
{
"Message": "string",
"ErrorDetails": [
  {
    "DetailedErrorCode": "string",
    "DetailedErrorMessage": "string"
  }
]
}
```  
GeneralError  
General error information.  
type: object  
required: ["Message"]  
Message  
A message that contains information about the error.  
type: string  
ErrorDetails  
A list of error details.  
type: array  
items: [ErrorDetail](definitions-errordetail.md)  
ErrorDetail  
Details about the error.  
type: object  
DetailedErrorCode  
A detailed error code.  
type: string  
DetailedErrorMessage  
A detailed error message.  
type: string