fix: Negative Qty and Rates in SO/PO (#38252) * fix: Don't allow negative qty in SO/PO * fix: Type casting for safe comparisons * fix: Grammar in error message * fix: Negative rates should be allowed via Update Items in SO/PO * fix: Use `non_negative` property in docfield & emove code validation (cherry picked from commit b9f5a1c85dc29acc22e704d866178a98f3035c1d) Co-authored-by: Marica <maricadsouza221197@gmail.com>
Manage buying (purchasing).
Transactions include:
- Material Request
- Supplier Quotation
- Purchase Order
- Quality Inspection