Issues creating integration service custom connector

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The image shows a section of the EUVATAPI interface highlighting the "Activities" tab with options to "List All Records" and "Validate VAT Number." (Captioned by AI)
The image shows a section of the EUVATAPI interface highlighting the "Activities" tab with options to "List All Records" and "Validate VAT Number." (Captioned by AI)801×432 24.3 KB

A software interface is open with sections for output, activities, and a search function, displaying no search results for "Validate VAT Number." (Captioned by AI)
A software interface is open with sections for output, activities, and a search function, displaying no search results for "Validate VAT Number." (Captioned by AI)1327×1051 24.7 KB

Sadly doesn’t show up when the + is used to add a activity…