updated doc

README-SAR.md

@@ -45,6 +45,15 @@ The AWS Step Functions state machine will return the following outputs:
 * **cost**: the corresponding average cost (per invocation)
 * **duration**: the corresponding average duration (per invocation)
 
+## Error handling
+
+If something goes wrong during the initialization or execution states, the `CleanUpOnError` step will be executed. All versions and alises will be deleted as expected (the same happens in the `Cleaner` step).
+
+### How do I know which executor failed and why?
+
+You can inspect the "Execution event history" and look for the corresponding `TaskStateAborted` event type.
+
+Additionally, you can inspect the `CleanUpOnError` state input. Here you will find the stack trace of the error.
 
 ## State Machine Internals
 

README.md

@@ -113,7 +113,7 @@ You can inspect the "Execution event history" and look for the corresponding `Ta
 
 ![state-aborted](imgs/step-aborted-screenshot.png?raw=true)
 
-Additionally, you can inspect the `CleanUpOnError` status input. Here you will find the stack trace of the error.
+Additionally, you can inspect the `CleanUpOnError` state input. Here you will find the stack trace of the error.
 
 The following screenshots show what the visual workflow will look like in case of errors: