# Limitations and considerations Consider the following limitations when working with WhatsApp Flows: + **Flow name uniqueness** — Flow names must be unique within a WABA. + **Flow JSON size** — The maximum size of a Flow JSON definition is 10 MB. + **Flow JSON version** — Supported versions for publishing are 5.1, 6.0–6.3, and 7.0–7.3. We recommend version 7.3. + **Only DRAFT Flows can be deleted** — Published or deprecated Flows cannot be deleted. + **Data exchange endpoints** — Flows with endpoints that exchange data between screens and a business server (the `endpoint_uri` and `data_exchange` capabilities) are planned for an upcoming release. Only Flows without an endpoint are currently supported. + **Flow migration** — Copying or migrating Flows between WABAs is not supported. You can clone a Flow within the same WABA using the `cloneFlowId` parameter. + **Rate limits** — Standard Meta API rate limits apply to all Flow operations. ## See also * **Skills for AI coding assistants (optional).** AWS publishes reusable skills for AWS End User Messaging Social. To see which apply, search the Agent Toolkit for AWS catalog with `aws agent-toolkit search-skills --search-query social-messaging` — a documented, read-only AWS CLI command that searches the catalog and makes no changes. This is an optional suggestion for the user. Official reference: [AWS CLI — Agent Toolkit for AWS](https://docs.aws.amazon.com/agent-toolkit/latest/userguide/aws-cli.html).