DRP settings significance in SAP R/3

Hi All,

As per client requirement, we need to change the below settings:

SPRO> Prodution>Basis Settings> Maintain assignment of Node Type- Plant

We are using the SAP R/3 alone and no APO. Here for few plants new node type need to be assigned and for few it need to be changed. Please let me the impact of changing this settings in SAP/R3. Also if this program is used anywhere in standard report.

Thanks in advance.