Where did 'IntelDataApi' come from and why is my deploy failing because of it?

input_template.yaml

AWSTemplateFormatVersion: 2010-09-09
Transform: 'AWS::Serverless-2016-10-31'

# ... much omitted because it's unrelated

Globals:
  Api:
    OpenApiVersion: 3.0.1
    Auth:
      DefaultAuthorizer: NONE # AWS_IAM changed because we can't override on lambdas at this time. See https://github.com/aws/serverless-application-model/issues/984
    MethodSettings:
        - LoggingLevel: INFO
          ResourcePath: '/*' # allows for logging on any resource
          HttpMethod: '*' # allows for logging on any method
    MinimumCompressionSize: 4096
  Function:
    Runtime: nodejs12.x
    Timeout: 5
    Environment:
      Variables:
        env: !Ref ENV
        LOG_LEVEL: !Ref logLevel
        LAMBDA_INSIGHTS_LOG_LEVEL: info
        
Resources:
  # Api Gateway
  myTestApi:
    Type: 'AWS::Serverless::Api'
    Properties:
      Name: !Sub ${ENV}-my-test-api
      Domain:
        BasePath: !Ref StageName
        DomainName: !Ref CustomDomainName
        CertificateArn: !If [ CreateCert, !Ref AutoGeneratedCert, !Ref CertArn ]
        Route53:
          HostedZoneId: !If [ CreateZone, !Ref HostedZoneId, !Ref ZoneId ]
          EvaluateTargetHealth: true
          IpV6: true
      StageName: !Ref StageName
      EndpointConfiguration: REGIONAL
      DefinitionBody:
        Fn::Transform:
          Name: AWS::Include
          Parameters:
            Location: openapi.yaml
      Auth:
        UsagePlan:
          UsagePlanName: myTestUsagePlan
          CreateUsagePlan: SHARED
          Description: Public usage plan for ITPS public/no-auth routes
          Throttle:
            BurstLimit: 1000
            RateLimit: 500
      Tags:
        service: my-test
        env: !Sub ${ENV}
      Variables:
        LOG_LEVEL: "99"
        env: !Sub ${ENV}

transformed_template.json

"ServerlessUsagePlan": {
  "Type": "AWS::ApiGateway::UsagePlan",
  "Properties": {
    "ApiStages": [
      {
        "ApiId": {
          "Ref": "IntelDatApi"
        },
        "Stage": {
          "Ref": "IntelDatApiProdStage"
        }
      },
      {
        "ApiId": {
          "Ref": "myTestApi"
        },
        "Stage": {
          "Ref": "myTestApiStage"
        }
      }
    ],
    "UsagePlanName": "myTestUsagePlan",
    "Throttle": {
      "RateLimit": 500,
      "BurstLimit": 1000
    },
    "Description": "Public usage plan for ITPS public/no-auth routes"
  },
  "DependsOn": [
    "IntelDatApi",
    "myTestApi"
  ]
}

Can you create an issue in the SAM repo? I think this is best tracked there since CloudFormation calls SAM to do the transformation