SAP Message C1007 - Function module & not found

Diagnosis
Function module &v1& does not exist, or you have selected a functionmodule with a name of more than 27 characters from the possible entriesfunction.

Procedure
Enter a valid function module. Please note that the function modulename can only contain 27 characters. This difference from the SAPstandard is to accomodate the naming conventions for the possibleentries function modules.