---
title: "Multiple 1:M entities"
url: "https://openforis.support/questions/2659/multiple-1m-entities"
tags: ["collect"]
status: "answered"
score: 0
answer_count: 2
asked: "2020-02-04T14:04:30"
last_activity: "2020-02-06T23:12:11"
source: "Open Foris Support - Q&A Forum"
license: "Copyright Open Foris, 2026. Some rights reserved under creative commons license."
---

# Multiple 1:M entities

Asked by Sabrina on 2020-02-04

Hi all  

In my survey the sampling unit is plot. It contains a 1:M entity for the deadwood transects(table transect). Each transect should be able to accommodate several pieces of deadwood.  
When I want to add a 1:M entity to "transect" I get a error message. It is only possible to add a single entity. What do I have to do in order to be able to capture several pieces of deadwood on several transects?  

Thanks for your support!


## Answer (score 1, by Lauri (OF) on 2020-02-06)

Link: https://openforis.support/questions/2659/multiple-1m-entities/2661

Dear Sabrina,

Add first a new tab. Then you should be able to add 1:M entity.

Regards, Lauri


## Answer (score 0, by Stefano (OF) on 2020-02-06)

Link: https://openforis.support/questions/2659/multiple-1m-entities/2662

Dear Sabrina,  
Collect does not support multiple entities inside multiple entities with Table layout.  
Please try to change the layout of the deadwood transect entity into "Form": you will be able to craete another multiple entity inside of it.  
Many thanks,  
Open Foris Team