As announced in Introducing New Cloud Identifiers, Atlassian is changing the identifiers used for purchased licenses and, in particular, replacing the Support Entitlement Number (SEN), also known as the ServiceEntitlementNumber. We will be adding the new identifiers to the Connect install payload in an update coming in the next few months. The new identifier and the existing SEN will both be present in the install payload so that app developers may correlate these values and take the necessary steps to migrate any current usage of the SEN value.
The rationale for this change is covered in Introducing New Cloud Identifiers.
You will need update any current usage of the SEN value in your systems to use the new identifier provided.
When we make the new identifier available in the install payload, this will start a six month deprecation period during which both the SEN and new identifiers are both sent to app in the install payload. At the completion of that period, the SEN will be removed and no longer be present in the install payloads.
A separate notice will be sent when this change is available.