Consumption would exceed the amount from item &1 &2 by &3 %

What causes this issue?

You want to reduce the amount for the earmarked fund &V1&, item &V2&.
However, so much fund from this item has already been consumed that the
consumption would overrun the item amount by &V3&% .
IF &[SWITCH]S4H_DOCU_CLOUD& = 'X'.

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

ELSE.
If the document is subject to an approval procedure, the check is made
on the basis of the new amount to be approved that results from the
reduction.
ENDIF.
INCLUDE FMRE_RE_TOL2 OBJECT DOKU ID TX
INCLUDE FMRES_UEBNOTE1 OBJECT DOKU ID TX

Error message extract from SAP system. Copyright SAP SE.