Update the key data type from string to int64

[steevej (Steeve Juneau)]

That would be the same process as answered to you in

Update the DataType for a field inside the Nested Array

Hello @Amarendra_Krishna , You can use an update with aggregation pipeline starting from MongoDB 4.2, $map to iterate loop of receive array $mergeObjects to merge current object with updated property $toLong to convert the type of tagSerialNumber to string db.collection.updateMany( { "receive.tagItems.tagSerialNumber": { $type: "string" } }, [{ $set: { receive: { $map: { input: "$receive", in: { $mergeObjects: [ "$$this",…