data0001743C DCD aApiKey ; api_keydata00017440 unk_17440 DCB 0 ; DATA XREF sub_126AC+28↑odata00017440 ; sub_

This section of the code appears to be defining a string called "apiKey" as a DCD (double word constant) and an uninitialized byte called "unk_17440". The purpose of this string and byte is not clear without additional context from the surrounding code.