No account group assigned to grouping &1; check the Customizing

What causes this issue?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

How to fix this error?

The configuration of the Customer Vendor Integration ( CVI ) is done by
customizing for Master Data Synchronization via transaction code SPRO.
The following is needed for the Vendor Integration which is currently
affected.
<DS:SIMG.MDSV_CTRL_OPT_A>Activate Synchronization Options</>: For BP /
Vendor and Vendor / BP the active indicator has to be set
<DS:SIMG.V_TBC002>Set BP Role Category for Direction BP to Vendor</>.
<DS:SIMG.CVIV_VEND_TO_BP2>Define BP Role for Direction Vendor to BP</>.
<DS:SIMG.V_TBC001>Define Number Assignment for Direction BP to Vendor
</>.
<DS:SIMG.CVIV_VEND_TO_BP1>Define Number Assignment for Direction Vendor
to BP</>.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.