Only one currency can be assigned for quantity postings

What causes this issue?

<GL:document_type>Document type</> &V1& supports posting with
quantities in <GL:version>version</> &V2&. In this case, you can only
post in one currency, too.

System Response

Error message.

How to fix this error?

Select only up to one currency in the transaction type definition,
which is to be posted in addition to the quantity. Otherwise post
without quantities.

Error message extract from SAP system. Copyright SAP SE.