Module route_table 

Duplicate subnet/route-table association detection.

EC2 allows exactly one route table per subnet, so two AWS::EC2::SubnetRouteTableAssociation resources naming the same subnet fail at deploy time. A subnet’s identity here is the complete authored or resolved value: identical expressions prove one subnet, while expressions that merely share a component reference do not, evaluated through Fn::If branches.

Two associations clash only when their combined resource-level and property-level condition assumptions are co-satisfiable — if no parameter assignment can make both branches simultaneously true, they are mutually exclusive and cannot conflict at deploy time.

Structs

AssociationFinding

A clash finding anchored at Properties.SubnetId.

Functions

duplicate_subnet_associations