For the error message:
"No delivery to because message too long, maximum length 20.000.000 bytes
Message no. XS841
Diagnosis
The message could not be delivered to recipient because the message text was too long. The node used supports messages up to a a length of
20.000.000 bytes. The message text is, however, e.g. 95.181.977 bytes long.
System Response
Processing was completed as normal.
Additional information on node (in the system language, if available):
E-mail is too long or has too many recipients (max
Procedure
Only send messages that are smaller than the specified 20.000.000 bytes using this node. Contact your system administrator if you want to send
longer messages. If so, the node software or the service agent may have to be changed.
Procedure for System Administration"
For this issue you need to check the SAP note 690020.
As per SAP note 690020:
If you want to allow larger emails to be sent, increase the mpi/total_size_MB parameter in the SAP profile to a value that is
greater than a quadruple of the largest mail to be sent. (For the size of the mail, as a rule of thumb you can use approximately 150% of the
size of the user data contained in the mail).
And you can see this in transaction SOST:
No delivery to because message too long, maximum length 20,000,000 bytes
Message no. XS841
Diagnosis
The message could not be delivered to recipient because the message text was too long. The node used supports messages up to a a length of
20,000,000 bytes. The message text is, however, 95.181.977 bytes long.
You need to check on your system the value of the parameter mpi/total_size_MB, if its value not large enough (default value is 80), you need to increase it to 96 x 4 = 384 (in this case it's 95.181.977 bytes long) .
