Consistency of debit/credit indic. for internally allocated transactions

What causes this issue?

Checks for existence of <DS:DE.HVORG_KK>transactions</> that were
allocated to an <DS:DE.TVORG_KK>internal transaction</> with a
different <DS:DE.SHKZG>debit/credit indicator</>.

System Response

It is a serious error if inconsistencies exist. The transaction
concerned can no longer be used to post items correctly.

How to fix this error?

If the system finds an inconsistency, you have the following options:
Allocate the transaction differently.
Change the debit/credit indicator of the external transaction.
Delete the allocation, if you do not require allocation to internal
transactions.

Error message extract from SAP system. Copyright SAP SE.