Just finished a call with K. Wichai about ISDA.
Learnt from K.Wichai that the ISDA has been initiated by Audi AG.
However, as the nature of FX transaction, the transaction amount is usually over the limit of THB 20 mm, that K.Wichai and Grabriele are authorized to sign.
Learnt from K.Wichai for the company attention to split the transaction in order to meet maximum of THB 20 mm. However, from the language on your document, it is not deemed allowing to do as such.