Why sending different message to AWS SQS return same message ID - amazon-web-services

Question

I want to send messages to a FIFO sqs queue. Given a array of list different user ids, for each id, I want to call sendMessage command to send the id as message body. I'm expecting every time it will return a different message id, but actually they all return same messageId. Sample code below:
const sendMessage = async (params:ISqsRequestParam) => {
try {
const sqsResponse = await sqsClient.send(new SendMessageCommand(params));
console.log(`send message response: ${JSON.stringify(sqsResponse)}`);
return sqsResponse.MessageId; // For unit tests.
} catch (err) {
console.error('SQS sending', err);
}
};
export const handler = async function (event: IEventBridgeAddtionalParams, context: Context): Promise<string[]> {
console.info(`${context.functionName} triggered at ${event.time} under ${process.env.NODE_ENV} mode`);
console.info(`customor parameter value is ${event.custom_parameter}`);
try {
const sqsUrl: string = event.custom_parameter === 'Creator' ? process.env.BATCH_CREATOR_QUEUE_URL : process.env.BATCH_PROCESSOR_QUEUE_URL;
console.info(`SQS Url is: ${sqsUrl}`);
const tenantData: ITenantResponse = await fetchAllTenantIds();
console.info(`ResponseDate from tenant service: ${JSON.stringify(tenantData.value)}`);
// change to fix tenantId for development environment for better debugging and test
const data : ITenantDetails[] = process.env.NODE_ENV !== 'production' ? fixedTenantDataForNonProd() : tenantData.value;
const promise = data.map(async tenantDetails => {
if (!tenantDetails.tenantFailed) {
console.info(`Tenant Id in message body: ${tenantDetails.id}`);
const params: ISqsRequestParam = {
MessageBody: tenantDetails.id,
MessageDeduplicationId: `FP_Tenant_populator_${event.custom_parameter}`, // Required for FIFO queues
MessageGroupId: `FP_Tenant_populator_Group_${event.custom_parameter}`, // Required for FIFO queues
QueueUrl: sqsUrl //SQS_QUEUE_URL; e.g., 'https://sqs.REGION.amazonaws.com/ACCOUNT-ID/QUEUE-NAME'
};
const messageId:string = await sendMessage(params);
return messageId; //for unit testing
} else {
return null; //for unit testing
}
});
const messageIds:string[] = await Promise.all(promise); //for unit testing
const activeMessageIds:string[] = messageIds.filter(id=> id!= null); //for unit testing
console.info(`Success, ${activeMessageIds.length} messages sent. MessageID:${activeMessageIds[0]}`);
return activeMessageIds; //for unit testing
} catch (error) {
console.error(`Fetch tenant details error: ${error}`);
}
};