reliability and PCA in spss

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reliability and PCA in spss

vini
Hi all !

The message
"the determinant of the covariance matrix is zero" is bothering me while performing reliability analysis.
Basic details of the data is
No of observation=320
no. of variables 13 ( all are dichotomous in nature bearing value either 1 or 2)
KMO is >.6 and sig. is .000
However, the value of derminant of correlation matrix is .065 while I performed PCA.

Any solution ?

Thanx
Vini