error in planning

Hi,

Does blocking of a 1st,2nd level item (other than 0 level item or 0 level item) will create any error while planning the requirements through planning worksheet?

System stops planning once it encoounters this error. But in realistically we may block some items for various reasons. How to handle such incidents for planning?

Pl suggest on this…

regards

babu

Run requirements where Blocked = No