嵌套模型中 mongoose-auto-increment 插件的问题

我正在尝试增加procedureid & doctorId每当 api 调用被触发时。我正在使用以下语法。但是，它给出了一个错误Treatment.procedureid_1 dup key当我第二次通过浏览器调用api时。 我可以看到 procedureid 和 doctorId 的值在自动增量创建的 IdentityCounter 集合中不断增加。但是，相同的情况并未反映在各自的架构中

您能帮我解决这个问题吗？

 var mongoose = require('mongoose');   
 var autoIncrement = require('mongoose-auto-increment');

 var hospitalDoctorSchema = new Schema({


    Treatment: {
                procedureid: { type: Number,required: true, unique: true,default: 0 },               

                doctor: {
                    doctorId: { type: Number, required: true, unique: true, dropDups: true, default: 0 },

                },
    },
    updated_at: { type: Date, required: true, default: Date.now }
});


autoIncrement.initialize(mongoose.connection);

hospitalDoctorSchema.plugin(autoIncrement.plugin, {
    model: collection,
    field: 'Treatment.procedureid',
    startAt: 10000,
    incrementBy: 1
});
hospitalDoctorSchema.plugin(autoIncrement.plugin, {
    model: collection,
    field: 'Treatment.doctor.doctorId',
    startAt: 10000,
    incrementBy: 1
});

//create collection.
module.exports.hospitalModel = mongoose.model(collection, hospitalDoctorSchema);