- The message about the panzers is useless without knowing the actual direction the panzers drive to. The same is true for Jerry's whereabouts.
- It is highly unlikely that the codebook used would use the first letters of the messages. Codes were not always strong, but this would border on pure incompetence.
- If the codes are actually consisting of the first letters of message words, one would expect the letter frequencies of the message to be comparable to the English language. But this is not the case. There are too many Xs, Qs and Js.
- The actual codebook using the acronyms have not been cited, referenced or a picture provided.
- Five-letter groups are standard for the time. There is no reason to believe that there is a single six-letter PABLIZ group in the message. In the picture published by GCHQ the group is clearly PABUZ and not PABLIZ.
- AOAKN is repeated at the front and at the end of the message. It is more likely that this is an indicator group and doesn't have any meaning.
At this point in time there is not much one can say for sure about the message: The message encryption requires a substitution because the letter frequency is significantly different form English. It is not a pure transposition. A codebook is possible, but I wouldn't exclude substitution ciphers right now. AOAKN is very likely a indicator group.