applyOps returns wrong error code when document validation fails

(function() { 'use strict'; var dbName = 'bypass_document_validation'; var collName = 'bypass_document_validation'; var myDb = db.getSiblingDB(dbName); var coll = myDb[collName]; var docValidationErrorCode = ErrorCodes.DocumentValidationFailure; coll.drop(); // Create a collection with a validation rule assert.commandWorked(myDb.runCommand({create: collName, validator: {a: {$exists: true}}})); // Test applyOps with a simple insert var op = [{ts: Timestamp(0, 0), h: 1, v: 2, op: 'i', ns: coll.getFullName(), o: {_id: 1}}]; // applyOps is returning ErrorCodes.UnknownError (8) instead of DocumentValidationFailure assert.commandFailedWithCode( myDb.runCommand({applyOps: op, bypassDocumentValidation: false}), docValidationErrorCode ); assert.eq(0, coll.count({_id: 1})); })();