It is posted at the following location on System Documents Site.
[System Documents Site]
System Documents > arrowhead/ToSTNeT/FLEX > Connection Specifications (arrowhead/ToSTNeT) Related
- ToSTNeT FIX Interface Specifications_ver.X.X
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URL:
https://faqsd.jpx.co.jp/category/show/675?site_domain=en_system_documents