Firebase Cloud Firestore : Invalid collection reference. Collection references must have an odd number of segments

Question

I have the following code and getting an error :

Invalid collection reference. Collection references must have an odd number of segments

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Answer 1

I've encountered this issue when I provided an entity_Id that contains the "/" character ( my value was N/A ) when i was trying to read documentReference (DocumentReference docRef2 = fireStoreDb.Collection("Ass").Document(ass.Tel.ToString()) .Collection("vehicules").Document(ve.Immatriculation);). Here, the value ve.Immatriculation equals to N/A, and that was the problem.