Symptom / Error
When creating a new custom field, you receive an error such as:
"Error while creating field 'cf_XXXX': The 'vtiger_[module]cf' exceeds maximum column length."
Common variations include:
vtiger_leadscfexceeds maximum column lengthvtiger_accountscfexceeds maximum column lengthvtiger_contactscfexceeds maximum column length
You may also experience:
"Duplicate Field" errors when retrying, even though no field was created
Fields appearing to save but not showing in the module layout
Cause
The CRM module has reached its maximum custom field capacity due to database-level limits. Additional causes include:
Database schema corruption
Excessive deletion and re-creation of fields
System misinterpretation of current column limits
Solution
⚠️ Important: This is a backend database issue that requires technical intervention. Do not attempt to create more fields — further attempts may worsen the issue.
Stop attempting to create additional fields immediately.
Document how many fields you still need to create.
Contact Dazos Support with the following information:
Exact error message received
Affected module (Leads, Accounts, Contacts, etc.)
Number of additional fields needed
Your instance URL
Screenshots of the error
💡 Tip: While waiting for resolution, consider using existing fields for a similar purpose, utilizing module table fields for repeating data, or removing unused custom fields to free up capacity.
✅ Best Practice: Reuse fields across layouts instead of duplicating them, and plan your field structure before implementation to avoid hitting limits.
Escalation
Contact Dazos Support immediately. This issue requires:
Database schema analysis by Tier 3 developers
Backend field audit and cleanup
Potential database table modifications
📧 Support Contact: [email protected]