[SOLVED][Drupal CCK] Allow nodes to refer to multiple parent nodes
Drupal CCK fields currently allows child nodes of a parent node to refer to their respective parent nodes and this is the default behavior. If there are a number of parent nodes in your Drupal website with multiple child nodes for each parent node you might reach a situation where you need to allow a child node of one parent node to refer to another parent that is not directly its parent node, i.e. allow nodes to refer to multiple parent nodes.
This can be quickly implemented. Go to the Node Type settings page which can be accessed from admin/content/types and change the Nodereference field «Number of values:» to the required number.
Hope that helps.
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Reference: http://drupal.org/node/1452020
