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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:

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

Last modified on September 25, 2026