This topic describes the reasons why a stack fails to create.
Stacks that belong to the same user must have unique names.
Invalid stack name
A stack name cannot start with a number or contain non-alphanumeric characters.
Resource creation failure
If any resource in the stack fails to create, the whole stack fails. For example, if an ECS instance fails to create due to insufficient memory, the resource stack creation also fails.
Each user can create up to 50 resource stacks. For more information, see Constraints.