When using the Multi-Xero Organisation feature, it is important to configure organisations correctly to avoid sync issues or duplicate mappings.
The Primary Xero Organisation must always remain connected and must not be added to the Multi-Org section.
The Primary organisation is the main Xero organisation authenticated and connected to Salesforce. It should remain as the default connection and must never be duplicated inside the Multi-Xero Organisation section.
Click Reconnect.
Select the new Xero organisation in Xero.
Re-select the Primary Organisation in Salesforce.
Following this step, back on the SFX Setup tab, click on [ Select/Change Xero Org ]
Select your Xero Org and click [ Save ]
After completing the above steps:
Add the new organisation in the Multi-Org section.
The new organisation will appear in the dropdown list.
Select the new organisation and click Save.