Error CONVT_CODEPAGE in CSB58 (Spain)

Hello,

I have the following dump when creating the file from transaction FBWE...

A character set conversion is not possible.

At the conversion of a text from codepage '4103' to codepage '1100':

- a character was found that cannot be displayed in one of the two

codepages;

- or it was detected that this conversion is not supported

The running ABAP program 'RFFOES_D' had to be terminated as the conversion

would have produced incorrect data.

The number of characters that could not be displayed (and therefore not

be converted), is 1. If this number is 0, the second error case, as

mentioned above, has occurred.

Can you help me please?