Contents
Can we convert lookup into master-detail relationship?
To convert lookup to the master-detail relationship you need to give parent records on all child records. Then only you can convert a lookup relationship to a master-detail relationship if the lookup field in all the records contains a value.
When should you use a lookup instead of a master-detail relationship?
A typical use of a Master-Detail would be the classic Sales Order and Sales Order Items objects. Lookups are generally for use where you may or may need to have a relationship between two objects (but not always). Lookups are generally used to reference commonly shared data, such as reference data.
What is the difference between lookup and master-detail relationship?
The Salesforce lookup relationship has no relation with other records. It does not depend on any other objects, whereas a master-detail relationship has an association with other records. On the other hand, the lookup relationship is just a reference. It can be even blank or NULL.
What is the key difference between a master detail Realationship and a lookup relationship?
Can you create a new master detail relationship?
You cannot create a new Master-Detail relationship on an existing custom object if records already exist. You must first create a Lookup relationship, populate the lookup field with data in all records, and then change the relationship type to Master-Detail.”
Why do I get error on master detail?
The reason you are getting that error is because you have records that are already reflecting the lookup relationship. One option is for you to delete all the records that have that relationship with the other objects with type object that you want the master detail. Another is to delete the lookup which you are trying to change to Master-detail.
How to create a lookup relationship in Java?
You must first create a Lookup relationship, populate the lookup field with data in all records, and then change the relationship type to Master-Detail. Create a Junction Object with both the Object i.e. Master & Detail. Only then you will be able to create it.
When to change owner Field in MD relationship?
Verify if owner field has been used in any classes as detail record of MD relationship should not have owner field. For huge number of records, there could be possibility of halting or locking the sharing settings, when you change it. So, this needs to be performed outside of business hours. There could be change in custom report types.