Overview :Salesforce limits the number of API calls for a single organization. Tenfold uses API calls in order to facilitate the following functions:
– Matching calls to CRM records
– Searching your CRM for matching records
– Creating new CRM records
If you have noticed these functions stopped working, it may be due to reaching your API limit.
You can find more information about these limits here: Salesforce API Limits
If you are a Salesforce Administrator, you can use the following steps to pull up the most recent API usage by Salesforce user. This can sometimes be helpful in tracking down the source of high API usage.