Hi @lucyb20459049 ,
The data_coding field tells you which encoding is used. A major problem is that the value 0 means default SMSC encoding in the specification, in general it means GSM7, but that's not always the case. Check with the provider which encoding is associated with data_coding = 0 (AC only supports GSM7 for data_coding = 0). Other data_coding values tend to follow the specification, but the only way to be sure is to check with the SMSC provider.
Regards,
Milan