HomeBrandsMongoDBDatabase Server & Atlas187
M
187
Moderate
MongoDB · Database Server & Atlas
MongoDB server reported: Data Modified By Repair.
Quick Answer
Error code 187 on your MongoDB Database Server & Atlas means: MongoDB server reported: Data Modified By Repair.. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
MONGO-ATLAS-DEDICATEDMONGO-ATLAS-SERVERLESSMONGO-COMM-6.0MONGO-COMM-7.0MONGO-COMM-8.0MONGO-ENT-6.0MONGO-ENT-7.0MONGO-ENT-8.0
Likely Causes
  1. MongoDB returned code 187 (DataModifiedByRepair) while processing this request path.
  2. Repair/backup state or disk conditions blocked the requested change.
  3. Storage, filesystem, or durability preconditions were not satisfied.
How to Fix It
1
Review logs/telemetry for code 187 (DataModifiedByRepair) and capture the exact command and parameters that triggered it.
2
Validate backup/repair/index-build state before executing mutating operations.
3
Re-run after storage-layer alerts are clean and durability settings are confirmed.
4
Check disk health, free space, and filesystem-level errors on relevant nodes.
5
Add monitoring for recurring DataModifiedByRepair events so future incidents are detected and triaged faster.
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Related Error Codes
12456
Video Guides
Loading video guides…
Search more on YouTube →