rl78 and eeprom usage

Hi, I'm using the function R_IICA0_Master_Send() to store data into an eeprom.

After having call the function R_IICA0_Master_Send(), the callback r_iica0_callback_master_sendend() should be fired but sometimes this does not happens.

What can I do in order to know if the data was bee stored or not? Is there a error callback function to notify the problem?

Best regards.