Validator in error?

Dear Sirs,
When validating a webpage I get the following errors which I believe are wrong:
//
Below are the results of attempting to parse this document with an SGML parser. 
*	Line 117, column 35: 
		  ... icsson.se/pub/get?DocNo=03401-2331&Lang=EN&Format=PDFV1R2">E ...
		                                         ^
		Error: unknown entity "Lang" 
*	Line 117, column 50: 
		  ... 2web.ericsson.se/pub/get?DocNo=03401-2331&Lang=EN&Format=PDFV1R2">Eric ...
		                                                        ^
		Error: unknown entity "Format" 
//

The "entities" "Lang" and "Format" are part of the URL address string below and should not, I think, be interpreted as HTML entities. 
<A HREF="http://gask2web.ericsson.se/pub/get?DocNo=03401-2331&Lang=EN&Format=PDFV1R2">... ...</A>
Best regards
Hakan Rudh
Ericsson AB
Sweden