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teena jacobteena jacob 

Multi Select LookUp Field in Lightning

     How to create multiple records selection from lookup field in salesforce which supports in lightning.
NagendraNagendra (Salesforce Developers) 
Hi Teena,

You need to customize the application to cater this requirement. You can create a multi select component that will display all the available options, where the user can select one or more records as per your requirement.

For more information please refer to the below blog post ​​You can also populate the values dynamically (from the server) based on your requirement.

Hope this helps.

Please mark this as solved if it's resolved so that it gets removed from the unanswered queue which results in helping others who are encountering a similar issue.

teena jacobteena jacob

               I need that particular field in that object like a dropdown list for multiple selections. Is it possible with lightning?Can u help me
Waqar Hussain SFWaqar Hussain SF
No it does not seems possible on standard layout. You can develop a custom lightning component for multi select. For storing multiple record, you will have to create a junction object instead of lookup field to hold all selected records.
teena jacobteena jacob
Hi Waqar,

           Let me clear my requirement, I have 2 custom objects say 1.Status(with a text field) and 2. Reason(with a text field and a lookup to Status objects text field, but can able to select multiple values) on the creation of a record in Reson object I need to select the lookup values from there.
Is it possible to do with lightning? can u help
Waqar Hussain SFWaqar Hussain SF
You can follow the below article to develop custom component for multi select lookup 
Phil WPhil W
A better fit for this will be found on sfdcmonkey (http://sfdcmonkey.com/2018/02/20/multi-select-lookup-salesforce-lightning/).
Tushar sharmaTushar sharma
We don't have native multi select lookup available in Salesforce. So I have created one component in Lightning web component which is generic and can be easily used.