Are there any objects that cannot be accessed in Salesforce? gift?

Unable to Access Gift-Related Objects in Salesforce for Updates and Creations

I am updating records and creating new ones across various Salesforce objects. I can successfully find most objects except for those related to gifts.

Specifically, I need to update new donations and recurring instructions that were created on our nonprofit’s website, but I can’t locate the related objects. Are there objects in Salesforce that are inaccessible via API?

I have ensured that all API permissions are enabled, but this hasn’t resolved the issue.

Any help would be greatly appreciated!

We are using the newer NPC model.