NodeJS : Mongoose - caused by :: 11000 E11000 duplicate key error index
Mongo duplicate key error on upsert or save
E11000 duplicate key error index in mongodb mongoose
NodeJS : I am getting a duplicate key error index: when I am trying to save data in mongodb
MongoDB: Error E11000 Duplicate Key When Creating Unique Index
MongooseError: Mongoose.prototype.connect() no longer accepts a callback SOLVED in Node JS
duplicate key error index MongoDB
Node.js and mongoDb - UpdateMany and upsert
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Last Updated: August 15, 2026
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