tRFC and iDoc errors- when you load data , these are connection specific and if the source system is not set properly or is interrupted , you get these errors.

Intermediate DOCUMENT (IDoc) is a container for exchanging data between R/3, R/2 and non-SAP systems. IDOCS are sent in the COMMUNICATION layer by transactional Remote FUNCTION Call (tRFC) or by other file interfaces (for example, EDI). tRFC guarantees that the data is transferred once only. Was not able to find out when the errors occur.

tRFC and iDoc errors- when you load data , these are connection specific and if the source system is not set properly or is interrupted , you get these errors.

Intermediate Document (IDoc) is a container for exchanging data between R/3, R/2 and non-SAP systems. IDocs are sent in the communication layer by transactional Remote Function Call (tRFC) or by other file interfaces (for example, EDI). tRFC guarantees that the data is transferred once only. Was not able to find out when the errors occur.