Luis,
check

?VARTYPE(dossiersnew.u_glnentr),VARTYPE(dossiersnew.qtt),

looks like the fields get translated to something different then character.

If you check the xml, for example the one I send you

<?xml version="1.0" encoding="iso-8859-1"?>
<xml>
	<item>
		<bostamp>Adm22020730717,977000001</bostamp>
		<bistamp>Adm22020730718,046000002</bistamp>
		<ref>DIFGB2L</ref>
		<qtt>1.0000</qtt>
		<lote/>
		<obrano>36</obrano>
		<design>PC Gold&amp;Blue Porcelain 2L Diffuser Bottle (Empty)  </design>
		<lordem>10000</lordem>
		<u_glnentr>5600000025888</u_glnentr>
		<dataobra>2022-02-05 00:00:00.000</dataobra>
	</item>

u_glnentr looks like a number, qtt as well.

If you don't give a (xml) schema, VFP will guess the field type - and might guess wrong. I would guess a number anyway, so why not poor VFP?

Try to create the cursor first and then use flag 8192 for XMLTOCURDSOR, see help to XMLTOCURSOR. Read the stuff about 8192 and schema with some care.

Or try to add a schema to the XML expected via string operation in front of the data, use CURSORTOXML to create a valid one and check for the structure.

Lutz