Numbering issue for BP external (&1) and vendor external (&2)

What causes this issue?

You can assign the BP grouping &v1& to the vendor account group &v2& for
the Vendor UI.
The BP grouping and vendor account group refer to an external number
assignment. The <DS:DE.BC_SAMENUMBER>Same Numbers</> flag shall be set.
The issue occurs in the number range Customizing as the number range
intervals of vendor and business partner do not match.

System Response

The harmonization report
<DS:RE.MDG_BS_SUPPL_HARM>MDG_BS_SUPPL_HARM</> issues an error for these
Customizing settings.
Using these Customizing settings in the Vendor UI can lead to data
inconsistencies.

How to fix this error?

The number range for the vendor account group has to be part of the
number range for the BP grouping.
Check and correct the number range Customizing settings for the BP
grouping under <ZK>SAP Customizing Implementation Guide</> ->
<ZK>Cross-Application Components</> -> <ZK>SAP Business Partner</> ->
<ZK>Business Partner</> -> <ZK>Basic Settings</> -> <ZK>Number Ranges
and Groupings</> -> <DS:SIMG._CABP_BUCF>Define Number Ranges</>.
Check and correct the number range Customizing settings for the vendor
account group under <ZK>SAP Customizing Implementation Guide</> ->
<ZK>Financial Accounting</> -> <ZK>Accounts Receivable and Accounts
Payable</> -> <ZK>Vendor Accounts</> -> <ZK>Master Data </>->
<ZK>Preparations for Creating Vendor Master Data</> ->
<DS:SIMG.SIMG_CFMENUORFBXKN1>Create Number Ranges for Vendor Accounts
</>.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.