Unmanaged custom object tab already exists, package upgrade cannot create another tab

[Jyoti_Sinha]

When trying to upgrade a Z-Quote version from version 7, getting the following message:

(ZProduct__c) Unmanaged custom object tab already exists, package upgrade cannot create another tab

[Jyoti_Sinha · Accepted solution]

To resolve the error please carry below steps:

Go to Setup > Create > Tabs and delete the custom ZProducts tab