How To Fix UCMI040 - Doc.type &1: Change the input options for document field "&2"

SAP Error Message - Details

• Message type: E = Error

• Message class: UCMI - Messages for Breakdown Category, Item, Document Type, ...

• Message number: 040

• Message text: Doc.type &1: Change the input options for document field "&2"

What causes this issue?

In document type customizing on the <ZK>Document Field Options</> tab,
there are several entry options you can choose for the document fields.
Note that the entry option <ZK>According to Breakdown Category</> can be
chosen only for document fields that are also subassignments.
However, in document type &V1& you have chosen <ZK>According to
Breakdown Category</> for document field '&V2&' even though it is not a
subassignment.

System Response

Processing is terminated.

How to fix this error?

In document type &V1&, do not choose According to Breakdown Category for
document field '&V2&'.

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.