How do I resolve the error: message: 'Undefined attribute level operator conference_users'

I have two tables: web_conference is a one to many with the second child table conference_users.

I am attempting to use strapi.entityService to create a new entry to the web_conference and conference_users table like so:


const mapInvites = async ()=>{
    return inviteList.conferenceUsers.map(async (item)=>{
        let result = {                    
            userId:item.userId,
            sessionId:item.sessionId
        }
        return result
    })
}

try {
        const newParentObject = await strapi.entityService.create('api::web-conference.web-conference',{
            populate:true,
            data:{
                ownerId:userUid,
                sessionId:sessionId,
                title:title,
                date:date,
                startTime:startTime,
                endTime:endTime,
                publishedAt: publishedAt,
                conference_users:await Promise.all(await mapInvites()),
                inviteRequired:inviteOnly}
        });           
    }
catch (error) {
    console.log(error)    
}

However,I keep getting the error

message:'Undefined attribute level operator conference_users'
name: 'ValidationError'

I have no idea how to solve this and have been stuck for quite some time.

I simply want to be able to populate these tworelational tables. Can someone offer assistance?

I asome conference_users is a relation if it is you need to populate it with ids only also are you sure the name of the relation is conference_users