Own logical system is not defined in current client &1

What causes this issue?

Your own logical system is <ZH>not</> defined for the current client
&V1&.

System Response

Since function module
BAPI_ACC_DOCUMENT_POST is used on the technical side for posting to
Financial Accounting, then the system is
<ZH>not</> able to post the document if the logical system is
<ZH>not</> defined.

How to fix this error?

Process the logical system accordingly in
<DS:TRAN.SCC4>client maintenance</>.

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.