# Error: Configuration is ambiguously defined **URL:** \ **Category:** Serverless Framework\ **Created:** [February 15, 2018, 3:17pm UTC](https://forum.serverless.com/t/error-configuration-is-ambiguously-defined/3777 "2018-02-15T15:17:01Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Franky](https://yyz2.discourse-cdn.com/flex036/user_avatar/forum.serverless.com/franky/32/1471_2.png) [@Franky](https://forum.serverless.com/u/Franky)\ **Post date:** [February 15, 2018, 3:17pm UTC](https://forum.serverless.com/t/error-configuration-is-ambiguously-defined/3777/1 "2018-02-15T15:17:01Z")
When deploying my serverless project to AWS i get the following error: `An error occurred: S3BucketMyBucketName - Configuration is ambiguously defined. Cannot have overlapping suffixes in two rules if the prefixes are overlapping for the same event type` I have two different lambdas that use the same S3 Bucket Object Created event - because i want to run things in parallel with this newly created object. Is this a restriction of the Serverless Framework? Or is this generally not possible on AWS? ---
**Author:** ![bfieber](https://yyz2.discourse-cdn.com/flex036/user_avatar/forum.serverless.com/bfieber/32/653_2.png) [@bfieber](https://forum.serverless.com/u/bfieber)\ **Post date:** [February 15, 2018, 4:26pm UTC](https://forum.serverless.com/t/error-configuration-is-ambiguously-defined/3777/2 "2018-02-15T16:26:54Z")
That’s a limitation of AWS. You can read more about it in the [AWS Docs here](https://docs.aws.amazon.com/AmazonS3/latest/dev/NotificationHowTo.html#notification-how-to-filtering-examples-invalid) You could consider trying a [Messaging Fanout Pattern for Serverless Architectures Using Amazon SNS](https://aws.amazon.com/blogs/compute/messaging-fanout-pattern-for-serverless-architectures-using-amazon-sns/) Buggy talks about it in a similar thread [HERE](http://forum.serverless.com/t/sns-possible-to-send-multiple-messages-in-one-call/2747/3) Hope it helps.