Why do the AWS Pinpoint endpoints become INACTIVE without making them so?

Hello,

I am using the AWS JavaScript SDK to create endpoints. I have an AWS Lambda which has logic that creates an endpoints. I call the Lambda via GraphQL when a user is created so that the user gets an endpoint on creation. I setup the all users to have an active endpoint but literaly after a few minutes of creation every user's endpoint becomes INACTIVE. Why is that the case?

Here is the code I use to create the endpoint:

const { Pinpoint } = require("aws-sdk");
const AWS = require("aws-sdk")
const pinpoint = new AWS.Pinpoint(); 

exports.handler = async (event) => {
    
    const marketing = event.arguments.marketing;
    const typeAction = event.arguments.typeAction;
    const endpointAddress = event.arguments.address;
    const projectId = projectID;
    const valueAction = event.arguments.valueAction;

    const endpointID = generateEndpointID(20);


    const params = {
        ApplicationId: projectId, /* required */
        EndpointId: endpointID, /* required */
        EndpointRequest: { /* required */
          Address: endpointAddress,
          Attributes: {
            typeAction : [typeAction],
            valueAction : [valueAction],
            marketing : [marketing],
          },
          ChannelType: "EMAIL",
          EndpointStatus: 'ACTIVE',
          OptOut: 'NONE',
          User: {
            UserAttributes: {
              //
            },
            UserId: endpointAddress
          }
        }
      };

    const pinpointRes = await pinpoint.updateEndpoint(params).promise().catch(er=> {console.log(er)});
    return endpointID;
};