Here’s a guide that Insight uses for their EDI implementations, for the 832 (price/sales info). https://www.insight.com/content/dam/insight/en_US/pdfs/insight/support/edi/insight-edi-vendor-832-guidelines.pdf
Here’s the same for the 846 (inventory info). https://www.insight.com/content/dam/insight/en_US/pdfs/insight/support/edi/insight-edi-vendor-846-guidelines.pdf