cln_m4rie

DynamoDB UpdateItem error: Two document paths overlap with each other

2

## Reporting Bugs Moto Version: 3.1.15.dev7 The following error occurred in DynamoDB on AWS, but passed in Moto. ``` An error occurred (ValidationException) when calling the UpdateItem operation: Invalid UpdateExpression:...

For Example ```python class ChildB(MapAttribute): id = UnicodeAttribute() class ChildA(MapAttribute): id = UnicodeAttribute() child_b = ChildB() class Parent(models.Model): child_a = ChildA() ``` Output ``` { "parent": { "child_a": { "id":...