In AWS Step Functions, I need to perform a batch operation, so I am using Map. I am passing a token as an input parameter to the Step Function so it's accessible for the first Lambda (DEID-FF). However, from the DEID-FF Lambda, I am calling another Lambda, DEID-PARSER, but at that time, the token is not available to pass. How can I carry forward the input token to DEID-PARSER? I can't return the token inside the array of objects iterated through the map because the payload size is 256kb max.

I hardcoded currently token but need to make it dynamic.

{
  "Comment": "Workflow",
  "StartAt": "Fetch Documents",
  "States": {
    "Fetch Documents": {
      "Type": "Task",
      "Resource": "arn:aws:lambda:us-east-1:<YOUR_ACCOUNT_ID>:function:DEID-FF",
      "Parameters": {
        "person_id.$": "$.person_id",
        "request_id.$": "$.request_id",
        "token.$": "$.token"
      },
      "Next": "Check For Documents"
    },
    "Check For Documents": {
      "Type": "Choice",
      "Choices": [
        {
          "Variable": "$.body.hasDocuments",
          "BooleanEquals": true,
          "Next": "Parse Documents"
        }
      ],
      "Default": "No Documents"
    },
    "No Documents": {
      "Type": "Pass",
      "Parameters": {
        "caller": "No Documents"
      },
      "Next": "Update Stats NotRequired"
    },
    "Parse Documents": {
      "Type": "Map",
      "ItemsPath": "$.unprocessedDocumentIds",
      "Iterator": {
        "StartAt": "Process Document",
        "States": {
          "Process Document": {
            "Type": "Task",
            "Resource": "arn:aws:lambda:us-east-1:<YOUR_ACCOUNT_ID>:function:DEID-PARSER",
            "Parameters": {
              "person_id.$": "$.p_id",
              "request_id.$": "$.r_id",
              "document_ids.$": "$.d_id",
              "token": "<REDACTED_TOKEN>"
            },
            "End": true
          }
        }
      },
      "Next": "Consolidate Results"
    },
    "Consolidate Results": {
      "Type": "Task",
      "Resource": "arn:aws:lambda:us-east-1:<YOUR_ACCOUNT_ID>:function:DEID-CONSOLIDATOR",
      "Parameters": {
        "person_id.$": "$$.Execution.Input.person_id",
        "request_id.$": "$$.Execution.Input.request_id",
        "token": "<REDACTED_TOKEN>"
      },
      "Next": "Check Consolidated"
    },
    "Check Consolidated": {
      "Type": "Choice",
      "Choices": [
        {
          "Variable": "$.body.hasDocumentConsolidated",
          "BooleanEquals": true,
          "Next": "Replace PHI"
        }
      ],
      "Default": "No Consolidated"
    },
    "No Consolidated": {
      "Type": "Pass",
      "Parameters": {
        "caller": "No Consolidated"
      },
      "Next": "Update Stats NotRequired"
    },
    "Replace PHI": {
      "Type": "Map",
      "ItemsPath": "$.consolidatedDocumentIds",
      "Iterator": {
        "StartAt": "Replace Document",
        "States": {
          "Replace Document": {
            "Type": "Task",
            "Resource": "arn:aws:lambda:us-east-1:<YOUR_ACCOUNT_ID>:function:DEID-REPLACER",
            "Parameters": {
              "person_id.$": "$.p_id",
              "request_id.$": "$.r_id",
              "document_ids.$": "$.d_id",
              "token": "<REDACTED_TOKEN>"
            },
            "End": true
          }
        }
      },
      "Next": "Update Stats"
    },
    "Update Stats NotRequired": {
      "Type": "Task",
      "Resource": "arn:aws:lambda:us-east-1:<YOUR_ACCOUNT_ID>:function:DEID-FINALSTATS-NOTREQUIRED",
      "End": true
    },
    "Update Stats": {
      "Type": "Task",
      "Resource": "arn:aws:lambda:us-east-1:<YOUR_ACCOUNT_ID>:function:DEID-FINALSTATS",
      "End": true
    }
  }
}