Hi, Our team is trying to build a custom plugin for Jira Datacenter to make custom fields mandatory.

[Preethihr]

Can anyone help me to find any classes or methods in java to update field configuration by setting custom field as required.

I have found following method but I am not able to implement updateFieldLayoutItem method.

public void makeRequired(FieldLayoutItem fieldLayoutItem){  if (!getFieldManager().isRequirableField(fieldLayoutItem.getOrderableField()))  {    throw new IllegalArgumentException("Trying to require a field that is not requireable.");  }  // When requiring a field make it not hidden  final FieldLayoutItem modified = new FieldLayoutItemImpl.Builder(fieldLayoutItem)      .setHidden(false)      .setRequired(true)      .build();  updateFieldLayoutItem(fieldLayoutItem, modified);}

[Daniel Ebers]

A good point to start could be the documentation for Jira Sever (aimed to developers) which you can find here: https://docs.atlassian.com/software/jira/docs/api/8.22.6/
Please also find the start page which could be of further help:
https://developer.atlassian.com/server/

Please note that there are finally some Apps which probably cater the need. So it might make sense to have a look into Atlassian Marketplace in case you do not want to create the code from scratch by yourself.