> ## Documentation Index
> Fetch the complete documentation index at: https://docs.invoca.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Salesforce Download Error: Custom Relationship Limit Exceeded

> The Invoca Managed Package adds a Lookup field to several standard objects — if any of those objects is already at its Custom Relationship Field limit, installation fails.

**Applies to:** Salesforce Sales Cloud version 5.5.4 or lower

## Symptoms

A Salesforce Admin might encounter this error when installing the package (version 5.5.4 or lower), related to hitting the custom relationship limit on an object. The error message looks like:

```
Custom Relationship Limit Exceeded
Cannot create new relationship. Each object can have no more than 45 custom relationships, including Master-Detail and Lookup relationships.
```

## Cause

The Invoca Managed Package adds a Lookup field on each of the following objects, pointing to the related Invoca Call Log record: Account, Case, Contact, Lead, and Opportunity. If any of these objects is already at its limit for Custom Relationship Fields, installation fails with this error.

## Resolution

1. Run an Entity Definition Report in Salesforce to see how many Lookup and Master-Detail relationships exist in your system.
2. Use the report to determine which object(s) are at their Custom Relationship Field limit.
3. Remove a field from that object to make space for the fields added by the Invoca Managed Package.

## Where to go next

* [Salesforce Download Error: "The FieldLayout Is Not Supported for This Layout"](/s/article/salesforce-download-error-fieldlayout)
* [I Don't See the Invoca Managed Package in My Installed Apps Section in Salesforce](/s/article/salesforce-package-install-issue)
* [Salesforce Sales Cloud: Pre-Installation Checklist](/s/article/salesforce-sales-cloud-preinstall-checklist)