IMPORT_BUFFER_EXTERNAL_ERROR is an ABAP runtime error which you may come across when using or developing within an SAP system. See below for the standard details explaining what it means and how you can avoid or fix this runtime error.
Short Dump Classification: R - Error at ABAP Runtime
You can view further information about a runtme error by using transaction code ST22 which will show you this and all runtime erros that have happen in your SAP system.
Also check out the Comments section below to view or add related contributions and example screen shots.
Please see exp external err for more details about the possible cause of this runtime error and how it could be avoided.
Error code...............: <runtime parameter>.
Buffer ID...............: <runtime parameter>.
Table...................: <runtime parameter>.
Key.......................: <runtime parameter>.
Error during import from the cross-transaction application buffer
Please see runtime error for more details about the possible cause of this runtime error and how it could be avoided.
Please see exp external err for more details about the possible cause of this runtime error and how it could be avoided.
Please see exp external err for more details about the possible cause of this runtime error and how it could be avoided.