There are multiple definitions - click on the translation that matches your context.

Abnahme

Substantiv

neolog

formal inspection and approval

Comparative law notes

This English phrase aptly describes the essence of this German legal concept when accepting a work (customized work product) under sec 640 BGB : a buyer or transferee of the subject matter, which is being transferred, in this case "formally" inspects and approves the subject matter, which in turn triggers a number of legal consequences as described above.