Texts for item &1 exceed space available in Nota Fiscal form &2

What causes this issue?

The number of text lines associated with an item does not fit into the
Nota Fiscal form. The number of text lines originates from:

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

manual header text
reference to contract or schedule agreement
manual item text
texts for tax laws ICMS and IPI
dangerous goods texts.

System Response

Generating the NF out of SD Billing is not possible.

How to fix this error?

Please go back to the preceding document and delete manual text lines
for header or item. Then, bill again.

Error message extract from SAP system. Copyright SAP SE.