checkCIF procedure

PLAT807

 PLATON can handle up to 'NP1' in the (expanded) ATOM list. This might happen
 with disordered or network structures in high symmetry space-groups. Deletion
 of the symmetry information might solve part of the problem and provide a
 partial validation. Alternatively, clicking on 'NOSYMM' on the PLATON menu
 before invoking validation might address the problem.