I'd be more likely to say "agglutinative" than "concatinative."

My translation:

"Phonotactic *constraints* and the agglutinative nature of Paez account for most of the phonological and morphophonological processes that have been identified."

237 refs for "agglutinative nature"

In that case we were faced with **the problems of the agglutinative nature of the language**. ... Different than the agglutinative nature of Turkish, the specific ...
www.busim.ee.boun.edu.tr/~speech/projects/Turkish_dictation...

The morphological analysis is quite complex in Korean **due to its agglutinative nature**, and mainly consists of 3 steps: morpheme. ...
citeseer.ist.psu.edu/71260.html

Contents. 1 Characteristics of the Japanese Language. 1.1 **Agglutinative Nature**; 1.2 Context Basis; 1.3 Sentence Order; 1.4 Politeness System ...
en.wikibooks.org/wiki/Japanese/Grammar/Overview

Due to **the agglutinative nature of the Korean language**, it is not simple to categorize its part of speech. Nevertheless, the author adopts the eight part of ...
listserv.linguistlist.org/cgi-bin/wa?A2=ind0102c&L=linguist&P=12200

Parsing agglutinative word structures and its application to ...
**The agglutinative nature of the language and the resulting complex word formations**. various phonetic harmony rules and subtle exceptions present certain ...
portal.acm.org/citation.cfm?coll=GUIDE&dl=GUIDE&id=992075 -

Uqausiit: Inuktitut Language Technologies | Information Analysis ...
**Given the polysynthetic, agglutinative nature of the language**, however, building such tools will not mean simply translating words from one language to ...
iit-iti.nrc-cnrc.gc.ca/projects-projets/uqausiit_e.html

Also, 26,000 refs to "phonotactic constraints." If you have been using "restrictions," you might want to go back and change that.

**Phonotactic constraints**. We have already dealt with vowel harmony. **An additional constraint** regarding vowels is that hiatus is not allowed inside a word. ...
www.glossopoiesis.net/Arden/phonotactics.html