LexModelBuildingService / Client / create_slot_type_version



Creates a new version of a slot type based on the $LATEST version of the specified slot type. If the $LATEST version of this resource has not changed since the last version that you created, Amazon Lex doesn’t create a new version. It returns the last version that you created.


You can update only the $LATEST version of a slot type. You can’t update the numbered versions that you create with the CreateSlotTypeVersion operation.

When you create a version of a slot type, Amazon Lex sets the version to 1. Subsequent versions increment by 1. For more information, see versioning-intro.

This operation requires permissions for the lex:CreateSlotTypeVersion action.

See also: AWS API Documentation

Request Syntax

response = client.create_slot_type_version(
  • name (string) –


    The name of the slot type that you want to create a new version for. The name is case sensitive.

  • checksum (string) – Checksum for the $LATEST version of the slot type that you want to publish. If you specify a checksum and the $LATEST version of the slot type has a different checksum, Amazon Lex returns a PreconditionFailedException exception and doesn’t publish the new version. If you don’t specify a checksum, Amazon Lex publishes the $LATEST version.

Return type:



Response Syntax

    'name': 'string',
    'description': 'string',
    'enumerationValues': [
            'value': 'string',
            'synonyms': [
    'lastUpdatedDate': datetime(2015, 1, 1),
    'createdDate': datetime(2015, 1, 1),
    'version': 'string',
    'checksum': 'string',
    'valueSelectionStrategy': 'ORIGINAL_VALUE'|'TOP_RESOLUTION',
    'parentSlotTypeSignature': 'string',
    'slotTypeConfigurations': [
            'regexConfiguration': {
                'pattern': 'string'

Response Structure

  • (dict) –

    • name (string) –

      The name of the slot type.

    • description (string) –

      A description of the slot type.

    • enumerationValues (list) –

      A list of EnumerationValue objects that defines the values that the slot type can take.

      • (dict) –

        Each slot type can have a set of values. Each enumeration value represents a value the slot type can take.

        For example, a pizza ordering bot could have a slot type that specifies the type of crust that the pizza should have. The slot type could include the values

        • thick

        • thin

        • stuffed

        • value (string) –

          The value of the slot type.

        • synonyms (list) –

          Additional values related to the slot type value.

          • (string) –

    • lastUpdatedDate (datetime) –

      The date that the slot type was updated. When you create a resource, the creation date and last update date are the same.

    • createdDate (datetime) –

      The date that the slot type was created.

    • version (string) –

      The version assigned to the new slot type version.

    • checksum (string) –

      Checksum of the $LATEST version of the slot type.

    • valueSelectionStrategy (string) –

      The strategy that Amazon Lex uses to determine the value of the slot. For more information, see PutSlotType.

    • parentSlotTypeSignature (string) –

      The built-in slot type used a the parent of the slot type.

    • slotTypeConfigurations (list) –

      Configuration information that extends the parent built-in slot type.

      • (dict) –

        Provides configuration information for a slot type.

        • regexConfiguration (dict) –

          A regular expression used to validate the value of a slot.

          • pattern (string) –

            A regular expression used to validate the value of a slot.

            Use a standard regular expression. Amazon Lex supports the following characters in the regular expression:

            • A-Z, a-z

            • 0-9

            • Unicode characters (”u<Unicode>”)

            Represent Unicode characters with four digits, for example “u0041” or “u005A”.

            The following regular expression operators are not supported:

            • Infinite repeaters: *, +, or {x,} with no upper bound.

            • Wild card (.)


  • LexModelBuildingService.Client.exceptions.NotFoundException

  • LexModelBuildingService.Client.exceptions.ConflictException

  • LexModelBuildingService.Client.exceptions.LimitExceededException

  • LexModelBuildingService.Client.exceptions.InternalFailureException

  • LexModelBuildingService.Client.exceptions.BadRequestException

  • LexModelBuildingService.Client.exceptions.PreconditionFailedException