Rules & Limits

Understanding the rules and limits of chatbot flows helps you design effective conversations that work within the system's constraints.

WhatsApp message limits

These limits are set by WhatsApp and apply to all message types:

Component	Maximum
Text message body	4,096 characters
Interactive body	1,024 characters
Interactive header (text)	60 characters
Interactive footer	60 characters
Interactive buttons	3 buttons per message
Button label	20 characters
List menu button text	20 characters
List sections	10 sections
List rows per section	10 rows
List total rows	30 across all sections
List row title	24 characters
List row description	72 characters
SPM products	1 product
MPM products	30 products across up to 10 sections

Rule	Details
One trigger per flow	Every flow must have exactly one Trigger node
Trigger must be first	The Trigger node must be the starting point of the flow
No loops	Connections cannot create circular paths (A → B → C → A)
Flow names must be unique	No two flows can have the same name (case-insensitive)
Unique keywords	Two active flows cannot share the same keyword
Unique button IDs	Two active flows cannot use the same button click trigger ID

Rule	Details
Trigger node	Cannot be deleted; every flow must have one
End node	Every path should end with an End node
Connected nodes	All nodes must be reachable from the trigger
Template messages	Only approved templates can be used
HTTP Call timeout	Configurable per node (set a reasonable timeout to avoid hanging)

Rule	Details
Version required	Flow must have at least one saved version
Published version	Only published versions can be activated
Keyword conflict	Cannot activate if keywords conflict with another active flow
Button ID conflict	Cannot activate if button ID conflicts with another active flow
Active conversations	Cannot delete a flow with active conversations

Limit	Value
Contacts per trigger	Up to 5 contacts per request
Marketing limit	Up to 4 marketing messages per contact before blocking

Rule	Details
Naming	Letters, numbers, and underscores only
Case sensitive	`{{Name}}` and `{{name}}` are different
Scope	Variables exist only within a single flow execution
Empty variables	Appear as empty text in messages if not set

Action	Who can do it
View flows	Users with flow view permissions
Create/edit flows	Users with flow edit permissions
Activate/deactivate	Users with flow management permissions
Delete flows	Users with flow delete permissions
Trigger manually	Users with flow trigger permissions
View logs	Users with flow log permissions

info

Permission requirements depend on your organization's role configuration. Contact your administrator if you need access to specific features.