Vendor Order number tweaks

To the Number assignment flow were applied the following tweaks:

Prefix/Start number

• should be not required for the Item Receipt/Bill numbers
• if such fields are empty
  • if Bill/IR created from scratch then number is taken from the Company settings or Vendor settings
  • if Bill/IR created from PO then Prefix/number is taken from Company settings or Vendor settings

“Add Suffix on first document“ checkbox

removed from Company settings and Vendor settings for PO#