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SAP Knowledge Base Article - PublicSymptom
Get error “Adding more than 100 business Partners is not supported “ when setting up communication system
Environment
S/4 HANA Cloud
Cause
The UI does not allow to manually set more than 100 business partners.
Resolution
You can set the attribute "Is Hub System" to true, then all business partners which are available in the system are assigned to this communication system. Then you don't need to assign them manually.
For your reference, please check:
> How to Create Communication Systems
However, if you are still manually assigning business partners to other communication systems, the missing Business Partners would not be able to integrate.
Another workaround is:
Create more than one Communication system such as XXX_A/XXX_B/XXX_C..... ,and assign less 100 partner to every Communication system.
Keywords
KBA , BC-SRV-APS-COM , Maintain Communication System and Arrangement , Problem