SSM / Client / label_parameter_version



A parameter label is a user-defined alias to help you manage different versions of a parameter. When you modify a parameter, Amazon Web Services Systems Manager automatically saves a new version and increments the version number by one. A label can help you remember the purpose of a parameter when there are multiple versions.

Parameter labels have the following requirements and restrictions.

  • A version of a parameter can have a maximum of 10 labels.

  • You can’t attach the same label to different versions of the same parameter. For example, if version 1 has the label Production, then you can’t attach Production to version 2.

  • You can move a label from one version of a parameter to another.

  • You can’t create a label when you create a new parameter. You must attach a label to a specific version of a parameter.

  • If you no longer want to use a parameter label, then you can either delete it or move it to a different version of a parameter.

  • A label can have a maximum of 100 characters.

  • Labels can contain letters (case sensitive), numbers, periods (.), hyphens (-), or underscores (_).

  • Labels can’t begin with a number, “ aws” or “ ssm” (not case sensitive). If a label fails to meet these requirements, then the label isn’t associated with a parameter and the system displays it in the list of InvalidLabels.

See also: AWS API Documentation

Request Syntax

response = client.label_parameter_version(
  • Name (string) –


    The parameter name on which you want to attach one or more labels.


    You can’t enter the Amazon Resource Name (ARN) for a parameter, only the parameter name itself.

  • ParameterVersion (integer) – The specific version of the parameter on which you want to attach one or more labels. If no version is specified, the system attaches the label to the latest version.

  • Labels (list) –


    One or more labels to attach to the specified parameter version.

    • (string) –

Return type:



Response Syntax

    'InvalidLabels': [
    'ParameterVersion': 123

Response Structure

  • (dict) –

    • InvalidLabels (list) –

      The label doesn’t meet the requirements. For information about parameter label requirements, see Working with parameter labels in the Amazon Web Services Systems Manager User Guide.

      • (string) –

    • ParameterVersion (integer) –

      The version of the parameter that has been labeled.


  • SSM.Client.exceptions.InternalServerError

  • SSM.Client.exceptions.TooManyUpdates

  • SSM.Client.exceptions.ParameterNotFound

  • SSM.Client.exceptions.ParameterVersionNotFound

  • SSM.Client.exceptions.ParameterVersionLabelLimitExceeded