Hi ,
I feel as you are using the segment to derive you might be gettig this error Check your entry in the parameters field, if you use one. Additionally, please check this note 1034554.
Or elese the reason for the format error COBL-GSBER is because the field status
of the g/l account ( 47114711 )has "business area" set to required remove it and make as optional.
Thanks and Regards,
Arun Mulgund