we need to add a mailbody text to a standard mail (e.g. sales order confirmation using program SAPMV45A).
The output type was defined using transaction NACE with application V1 and medium 5 (external sending).
Currently we have only the PDF attachment without any text.
The mail text using transaction V/30 cannot be used for external sending (-> OSS 191470).
Is it possible to fill the mailbody text (argument: contents_txt in SO_DUCUMENT_SEND_API1) with standard customizing?
Or is a modification necessary?
Thanks in advance for your help.