Currency &1 in document &2 different to entered currency

What causes this issue?

Document &V2& comes from SAP Transportation Management (SAP TM).
The currency agreed in TM document &V2& is &V1&. You entered a different
currency.

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 entries.
If you delete your entries and choose "Enter", the system takes the
currency &V1& from the TM document.

Procedure for System Administrators

By default, this message is set as a warning. You can set the system
message as an error (<LB>E</>) in Customizing for <LS>Logistics Invoice
Verification</> under <DS:SIMG.SIMG_CFMENUOLMROMRM>Define Attributes of
System Messages</>.

Error message extract from SAP system. Copyright SAP SE.