Item & contains commitment item with fin. trans. other than 30

What causes this issue?

Item &V1& contains a commitment item with a
<DS:GLOS.financial_transaction>financial transaction</> other than 30
(Post income, expenditure, asset). Only postings with financial
transaction 30 are recorded in Funds Management (or Project Cash
Management).

System Response

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

How to fix this error?

Check your entry and specify a commitment item with financial
transaction 30.

Error message extract from SAP system. Copyright SAP SE.