## 5.4 Adding, Registering and Deregistering Systems
To connect an SAP system with a global account in SAP BTP, you need to register the system. You can also add and work with a third-party systems.
## Prerequisites
- You are a global account administrator, or you are a system landscape administrator of the global account where you want to register your SAP system. See Working with Role Collections [page 2351].
- Before adding your system, make sure it's not already auto-discovered and listed automatically in the System Landscape Systems page.
## Registering SAP Systems
##  Note
The content in this section is not relevant for China (Shanghai) and Government Cloud (US) regions.
For some system types, such as SAP SuccessFactors, SAP S/4HANA Cloud, SAP Marketing Cloud and SAP systems from the SAP Customer Experience portfolio, adding a system to the list in the Systems page is just the first step of the system registration process. When you have only added a system, the system is not yet registered in the SAP BTP global account. That is, the required configuration on the system side has not been performed, and therefore, the newly added system cannot exchange or expose its technical details, metadata, APIs, or events. Only when the registration process is complete and the system is registered with SAP BTP, it can exchange the relevant information and enable the extension scenario.
If your system is associated with the given global account, this system is discovered and added automatically to the Systems page based on information of the existing system landscape. Any SAP system that is associated with the same customer ID, with which your global account in SAP BTP is associated, will be auto-discovered.
##  Note
If a given SAP system is missing on the Systems page, it may be associated with a different customer ID on the SAP BTP global account you are working in. In this case, you need to add the system manually, and then, register it.
##  Note
You cannot migrate the registered SAP systems between global accounts.
If you want to start using another global account, you will have to register your SAP systems again.
For systems of type SAP SuccessFactors, SAP S/4HANA Cloud, SAP Marketing Cloud and SAP systems from the SAP Customer Experience portfolio, the registration of the newly added systems is based on a registration token. The registration token is used for the pairing of the system and the corresponding global account.
After you add a system, you can get the token in the SAP BTP cockpit. Then, you can use it to configure the integration on the corresponding system side. By using the registration token on the system side and registering the system, the system administrator allows the integration of the system with SAP BTP.
When you add an SAP system of type SAP SuccessFactors, SAP S/4HANA Cloud, SAP Marketing Cloud and SAP systems from the SAP Customer Experience portfolio, it appears in the system landscape list as a record with empty (or initialized) status. The system gets a Registered status, only when a token is issued and the registration is complete on the corresponding system side. In general, the Registered status means that the communication between the system and SAP BTP has been established. However, depending on the system and its requirements, additional configuration might be needed for the enablement of a fully functional extension scenario. The additional configuration, depending on the system type, is outlined in the corresponding documents listed in the Related Information section.
##  Note
When registering SAP systems of the same type, you can have up to 1000 tokens per global account ready to be used. Tokens that are already used to register an SAP system are not included in this number.
This means that you cannot have more than 1000 systems in the Systems list of the same type with an empty status and generated token that is not used yet.
For system types different than SAP SuccessFactors, SAP S/4HANA Cloud, SAP Marketing Cloud and SAP systems from the SAP Customer Experience portfolio, when adding a system in the Systems page, this system is registered directly but no status is displayed.
The registration process has the following states displayed in the cockpit:
- No status displayed in the Status column - the registration token for an SAP system of type SAP SuccessFactors, SAP S/4HANA Cloud, SAP Marketing Cloud or SAP systems from the SAP Customer Experience portfolio has been created but the registration on the respective SAP system side has not been performed or completed yet. For systems with type other than SAP SuccessFactors, SAP S/4HANA Cloud, SAP Marketing Cloud and SAP systems from the SAP Customer Experience portfolio are registered when added to the Systems page but no status has been displayed. Only systems that require a registration token to be registered have the status Registered when this token has been used.
- Registered - the registration token for systems of type SAP SuccessFactors, SAP S/4HANA Cloud, SAP Marketing Cloud and SAP systems from the SAP Customer Experience portfolio has been used and the automated registration process has been successfully completed. The systems of these types can be assigned to a formation on the Formations page in the cockpit. All other system types are registered without a registration token and can be assigned to a formation.
- Error while Registering - the registration has failed.
##  Note
If a system is in status Error while Registering , delete it and register it again.
If the registration error persists, report a case in one of the following components depending on the system type:
- SAP SuccessFactors BC-NEO-EXT-SF
- SAP S/4HANA Cloud BC-NEO-EXT-S4C
- All other system types BC-CP-MP
##  Note
When registering a system or creating a formation, the data you provide in the given input fields is not encrypted with your customer managed key. The data you enter is only encrypted at rest.
## Procedure
1. In the cockpit, navigate to your global account, and then choose System Landscape Systems .
2. On the Systems page, choose Add System .
##  Note
Before adding your system, make sure it's not already auto-discovered and listed automatically in the Systems page. Some of the SAP systems have additional configurations described in dedicated procedures. See:
- Register an SAP S/4HANA Cloud System in a Global Account in SAP BTP [page 2048]
- Register an SAP Marketing Cloud System in a Global Account in SAP BTP [page 2053]
- Register an SAP SuccessFactors System in a Global Account in SAP BTP [page 2061]
- Register an SAP Customer Experience System [page 2065]
3. In the Add System wizard:
1. In the Type dropdown list, select the system type.
2. Enter a name for the system you want to register.
##  Note
Use only printable ASCII characters.
##  Tip
We recommend that you indicate the type of the system when specifying the system name. For example, &lt;mysystem&gt;-commerce-cloud . This helps you identify the system type when assigning systems to a formation.
3. Choose Add .
4. For systems of type SAP SuccessFactors, SAP S/4HANA Cloud, SAP Marketing Cloud and SAP systems from the SAP Customer Experience portfolio, choose Get Token .
3. A registration token is generated for this system. Systems of type different than SAP SuccessFactors, SAP S/4HANA Cloud and SAP systems from the
4. SAP Customer Experience portfolio don't need a registration token, they are automatically registered when added to the Systems page. Their status is empty but you can consider them as registered.
5. Copy the registration token. You need the token to complete the integration on the respective SAP solution system side.
6. Close the wizard.
## Result
The system has been added as a record to the list on the Systems page in the SAP BTP cockpit. For systems of type SAP SuccessFactors, SAP S/4HANA Cloud and SAP systems from the SAP Customer Experience portfolio, a registration token for connecting the corresponding SAP solution with the global account in SAP BTP has been generated. Systems of type other than SAP SuccessFactors, SAP S/4HANA Cloud
and SAP systems from the SAP Customer Experience portfolio, are automatically registrated, no additional configurations are required.
##  Note
Registration tokens have different validity periods that depend on the system type. For more information about token expiry, see the corresponding documentation at the Related Links section.
## Next Steps
- For SAP systems of type SAP SuccessFactors, SAP S/4HANA Cloud, SAP Marketing Cloud and SAP systems from the SAP Customer Experience portfolio, use the registration token to complete the registration on the respective SAP system side. See:
- Trigger the Registration in the SAP S/4HANA Cloud Tenant [page 2052]
- Trigger the Registration in the SAP Marketing Cloud Tenant [page 2056]
- Register an SAP SuccessFactors System in a Global Account in SAP BTP [page 2061]
- Register an SAP Customer Experience System [page 2065]
- You can assign the system to a formation on the Formations page, as follows:
- SAP systems of type SAP Commerce Cloud , SAP Cloud for Customer , and SAP Field Service Management can be assigned to a formation directly before the integration is complete on the respective SAP Customer Experience system side. However, to enable the API access, you first need to complete the integration.
- For systems of type SAP S/4HANA Cloud , SAP Marketing Cloud and SAP SuccessFactors , you first need to configure the integration on the respective SAP system side.
- For systems of type other than SAP S/4HANA Cloud , SAP Marketing Cloud and SAP SuccessFactors and SAP systems from the SAP Customer Experience portfolio, after adding these systems in the Systems list, you can directly include them in a formation.
See Automating Integrations Using Formations [page 2075].
- If you no longer need it, you can deregister or remove the system depending on its status. See Deregister or Removе a System [page 2071].
## Registering Third-Party Systems
You add a third-party system to the list in the System Landscape Systems page. At this point you provide all the required details for this system: its type, provider, URL, and system ID. For third-party systems, this completes the registration process and you have your third-party system registered with SAP BTP. Even though the third-party system is registered directly, no status is displayed.
See Register a Third-Party System [page 2069].
## Deregistering Systems
Deregistering an SAP or third-party system means that the connectivity between this system and the global account is disabled and extension scenarios cannot be established, while removing a system means that this system is no longer part of the system landscape list. You can deregister or remove a system from the
Actions column, or from the System Details page that you access when selecting the system from the system landscape list.
See Deregister or Removе a System [page 2071].
## Merging Systems
If you have already added these systems manually at a given point in time and you have registered them, the auto-discovered systems might create duplicate entries in the list. To avoid duplicates and streamline the list of systems, you can merge automatically the auto-discovered SAP systems with your manually added systems.
See Mergе SAP Systems [page 2073].
## Related Information
Extending SAP S/4HANA Cloud in the Cloud Foundry and Kyma Environment [page 2110]
Extending SAP Marketing Cloud in the Cloud Foundry and Kyma Environment [page 2173]
Extending SAP SuccessFactors in the Cloud Foundry and Kyma Environment [page 2177]
Extending SAP Customer Experience Products in the Kyma Environment [page 2201]
Register an SAP Integrated Business Planning System in a Global Account in SAP BTP [page 2057]
Register a System of Type SAP BTP Application [page 2067]
Register a Third-Party System [page 2069]