Reduces the number of operations in a transaction to 64.

command/agent/txn_endpoint.go

@@ -14,7 +14,7 @@ const (
 	// maxTxnOps is used to set an upper limit on the number of operations
 	// inside a transaction. If there are more operations than this, then the
 	// client is likely abusing transactions.
-	maxTxnOps = 500
+	maxTxnOps = 64
 )
 
 // decodeValue decodes the value member of the given operation.

website/source/docs/agent/http/kv.html.markdown

@@ -182,7 +182,8 @@ query parameters will be ignored, since writes are always managed by the leader
 the Raft consensus protocol.
 
 The body of the request should be a list of operations to perform inside the atomic
-transaction, which looks like this:
+transaction. Up to 64 operations may be present in a single transaction. Operations
+look like this:
 
 ```javascript
 [
@@ -200,8 +201,6 @@ transaction, which looks like this:
 ]
 ```
 
-Up to 500 operations may be present in a single transaction.
-
 `KV` is the only available operation type, though other types of operations may be added
 in future versions of Consul to be mixed with key/value operations. The following fields
 are available: