batchGet method not working

[vijay9561]

Hi Team,
I have trying to get batch of record. But I'm unable to fetch the record and getting the below error and code.
Please help on that issue.

My Below code
import AWS, { DynamoDB } from 'aws-sdk';
const docClient = new AWS.DynamoDB.DocumentClient();

    const keyMap = await custIDs.map((element: any) => {
        return { customerId: element.mergeCustId.toString(), vehicleId: element.mergeCustId.toString() };
    });
    console.log("keyMap", JSON.stringify(keyMap));
    const params = {
        RequestItems: {
            'eos-dev-Customer-Vehicles': {
                Key: keyMap,
            }
        }
    };
    console.log("params", JSON.stringify(params));
    return docClient.batchGet(keyMap, (err: any, data: any) => {
        if (err) {
            console.log("err", err);
        } else { console.log("data", data); }
    });

Error:

2023-07-11T10:39:32.993Z a89ddd1c-c372-468c-a9d2-a91173ab9a82 INFO err MissingRequiredParameter: Missing required key 'RequestItems' in params
at ParamValidator.fail (/var/task/output/purge-merge-automation/index.js:22005:37)
at ParamValidator.validateStructure (/var/task/output/purge-merge-automation/index.js:22016:14)
at ParamValidator.validateMember (/var/task/output/purge-merge-automation/index.js:22043:21)
at ParamValidator.validate (/var/task/output/purge-merge-automation/index.js:21989:10)
at Request.VALIDATE_PARAMETERS (/var/task/output/purge-merge-automation/index.js:19767:42)
at Request.callListeners (/var/task/output/purge-merge-automation/index.js:25757:20)
at callNextListener (/var/task/output/purge-merge-automation/index.js:25747:12)
at /var/task/output/purge-merge-automation/index.js:19721:9
at finish (/var/task/output/purge-merge-automation/index.js:14369:7)
at /var/task/output/purge-merge-automation/index.js:14387:9
at EnvironmentCredentials.get (/var/task/output/purge-merge-automation/index.js:14925:7)
at getAsyncCredentials (/var/task/output/purge-merge-automation/index.js:14381:24)
at Config.getCredentials (/var/task/output/purge-merge-automation/index.js:14401:9)
at Request.VALIDATE_CREDENTIALS (/var/task/output/purge-merge-automation/index.js:19716:26)
at Request.callListeners (/var/task/output/purge-merge-automation/index.js:25753:18)
at Request.emit (/var/task/output/purge-merge-automation/index.js:25729:10) {
code: 'MissingRequiredParameter',
time: 2023-07-11T10:39:32.990Z
}

[tebanieo]

I am going to assume you have properly set up your credentials in your AWS environment and that you have imported the right AWS SDK libraries. At first glance, I can see you have a typo on your params const, it should include the word Keys not Key:

const params = {
        RequestItems: {
            'eos-dev-Customer-Vehicles': {
                Keys: keyMap,
            }
        }
    };

In your example, you are not sending params to the batch get item operation, you are sending keyMap and that JSON does not have the required parameters. I suggest you fix the typo and send the right variable to the batchGet method and let me know the results.

[vijay9561]

After Adding the Keys instead of key. But still getting the same error

const keyMap = await custIDs.map((element: any) => {
return { customerId: element.mergeCustId.toString(), vehicleId: element.mergeCustId.toString() };
});
console.log("keyMap", JSON.stringify(keyMap));
const params = {
RequestItems: {
'eos-dev-Customer-Vehicles': {
Keys: keyMap,
}
}
};
console.log("params", JSON.stringify(params));
return docClient.batchGet(keyMap, (err: any, data: any) => {
if (err) {
console.log("err", err);
} else { console.log("data", data); }
});

[mkamioner]

I know this is late to the game, but notice that in your batchGet call, you are sending keyMap and not params, changing the line to send params should solve this.

const keyMap = await custIDs.map((element: any) => {
  return { customerId: element.mergeCustId.toString(), vehicleId: element.mergeCustId.toString() };
});

console.log("keyMap", JSON.stringify(keyMap));

const params = {
  RequestItems: {
    'eos-dev-Customer-Vehicles': {
      Keys: keyMap,
    }
  }
};
console.log("params", JSON.stringify(params));
return docClient.batchGet(params, (err: any, data: any) => { // <-- See this line where we are not sending `params`, not `keyMap`