Custom Validation

Write Validation Expression

The expression receives all form data and returns:

undefined if valid

Array of error objects if invalid

Example: Minimum Selection

Require at least 5 projects:

($exists(projects) and $count(projects) >= 5)
? undefined
: [{"field": "projects", "message": "Select at least 5 projects"}]

Example: Required Together

If warehouse is selected, region must be too:

($exists(warehouse_id) and not $exists(region_id))
? [{"field": "region_id", "message": "Region is required when warehouse is selected"}]
: undefined

Testing Validation

Enter Test Data

Enter example input data

Write Expression

Write your expression

View Output

View the output

Verify

Verify errors appear for invalid data

Example Input

{
  "warehouse_id": "wh-123",
  "projects": [
    {"value": "1"},
    {"value": "2"}
  ]
}

Example Output (invalid)

[
  {"field": "projects", "message": "Select at least 5 projects"}
]

Getting Started

How Handled Works

Integrations

Unified APIs

Integrated Accounts

Webhooks

Link SDK

RapidBridge (Sync Jobs)

RapidForm

Workflows

Platform

Custom Validation

Enable Validation

Write Validation Expression

Example: Minimum Selection

Example: Required Together

Error Object Format

Testing Validation

Example Input

Example Output (invalid)

​Enable Validation

​Write Validation Expression

​Example: Minimum Selection

​Example: Required Together

​Error Object Format

​Testing Validation

​Example Input

​Example Output (invalid)

Enable Validation

Write Validation Expression

Example: Minimum Selection

Example: Required Together

Error Object Format

Testing Validation

Example Input

Example Output (invalid)