Total number of External Call Statements exceeded

Total number of External Call Statements exceeded

Hi,

In a Zoho Creator application yesterday we started getting this error:

Total number of External Call Statements exceeded. Line:(8)

The line referenced looks like this:

contact = zoho.crm.getRecordById("Contacts",contact_ID);

Can anyone tell me where we can find the limit of External Call Statements that we have? 

I searched the online help for a while, but I could not find anything on this concrete limit (external calls).

Thanks in advance!
Rodrigo