The file is not a standalone document, but rather a specific fragment of a multi-part compressed archive.
: You must have all pieces of the set in the same folder (e.g., SS-MaiSS-022_s.7z.001 , ...002 , ...003 , etc.). SS-MaiSS-022_s.7z.002
The naming convention SS-MaiSS-022 provides some clues to its origin: The file is not a standalone document, but
: The "022" suffix may link to ISO 20022 , the global standard for financial messaging used by banks and institutions like HSBC and Swift . If this is a financial data dump or a set of message definitions, it likely contains structured payment information. it likely contains structured payment information.