## 4.2.13.2.8.2  Communication System - Read and Write Integration
This service enables you to:
- Read and write communication systems
- Read and write assigned inbound users, outbound users and communication arrangements
This service is published on the SAP Business Accelerator Hub. For more information about APIs, see the Related Information section.
This is an OData version 4 service. This version aims to improve processing time and resource consumption of clients and servers. This includes a lightweight JSON format that reduces the size of every response.
## Technical Details
| Service Group (incl. Name- space if It Exists)   | Repository ID   | Service Name (incl. Name- space if It Exists)   |   Version |
|--------------------------------------------------|-----------------|-------------------------------------------------|-----------|
| aps_com_cs_a4c_odata                             | srvd_a2x        | aps_com_cs_a4c_odata                            |      0001 |
## Service Structure
## Service Header (optional)
The service header contains information about the service.
## Entities
The entities contain the business data of the service.
| Entity               | Description                        | Constants                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | Necessity   |
|----------------------|------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------|
| CommunicationSystems | Contains communication system data | Contains the following attrib- utes and values: • Type • customer_managed • provider_managed • CipherSuites • TLS_1_0_to_1_2 • TLS_1_0_to_1_3 • TLS_1_2_only • TLS_1_2_to_1_3 Please note that these values can also be empty. • IsCipherSuiteDefault • TLS_1_0_to_1_2 • TLS_1_0_to_1_3 • TLS_1_2_only • TLS_1_2_to_1_3 Please note that these values can also be empty. • OAuth2IdentityProvider- UserLogonType • user_uuid • user_name • SAMLBearerAssertion- ProviderUserLogonType • user_uuid • user_name | Mandatory   |
| Entity           | Description                                      | Constants                                                                                                                                                                                                                                                                      | Necessity   |
|------------------|--------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------|
| InboundUsers     | Contains references to the communication user ID | Contains the following attrib- utes and values: • OAuth2GrantType • authorization_code • saml2-bearer • ropc • client_credentials • OAuth2RefreshTokenEx- piryUnit • days • months • years • AuthenticationMethod • x509 • basic • none • oauth2 • oauth2_mtls • sso2 • oauth1 | Optional    |
| OutboundUsers    | Contains outbound user data                      | Contains the following attrib- utes and values: • OAuth2ClientAuthenti- cationMethod • basic • mtls • jwt • AuthenticationMethod • x509 • basic • none • oauth2 • oauth2_mtls • sso2 • oauth1                                                                                  | Optional    |
| BusinessPartners | Contains references to the business partner IDs  |                                                                                                                                                                                                                                                                                | Optional    |
## Additional Information
##  Note
For more information about Communication Management, see the Related Information section.
## Related Information
Communication Arrangements - Entity [page 1021]
APIs on SAP Business Accelerator Hub
Communication Management [page 2707]