# Purchasing

The Purchasing module is the main module for managing requisitions and purchase orders.

# General Process

graph TD;
    A[Requisition] --> B[Request for Quotation]
    B --> C
    A -->|direct order| C[Purchase Order]
    C --> D{Awaiting Delivery}
    D -->|not/partially received| C
    D -->|all received/<br>no further items expected| E[Close Purchase Order]

# Transaction Numbers (TAN), Transaction Elements and Transaction Stages

Transaction number for each document is built by using a combination of abbreviations, identifiers and running numbers. In most cases the following structure will be used:
[stage]-[vessel]-[costdepartment]-[year]-[runningnumber]
[stage] can have the following values:

Abbr.	Description
RQ	Requesition
SQ	service requisition
RfQ	request for quotation
SfQ	request for quotation (services)
PO	purchase order
SO	purchase order for services


[vessel]	uses the three-letter abbreviation assigned to a vessel
[costdepartment]	uses the abbreviation assigned to a cost department
[year]	uses the last two digits of the current year
[runningnumber]	The running number is automatically created when a new document is created. Transactions created in office own running numbers with a fixed offset (vessel starts at ‘1’ - office startes at ‘701’). If a vessel creates more than 700 transactions per year, a higher offset needs to be defined.

If a purchase order needs to be split for sending some order items to one supplier and remaining order items to another, usually the running number of the resulting purchase order TANs will be extended with A, B, C etc.. Examples

TAN	Description
RQ-KOR-D-25-108	108th requisition created on ferry Kornatiy for deck department
PO-KRK-E-25-213	213th PO created for ferry KRK for engine department
PO-GAR-25-001-D	1st requisition for vessel Garitan for `Department`

Abbreviation (last place)	Description
D	Department Deck on board created
E	Department Engine on board created
O	Department Office on board created
OD	Department Deck in Office created
OE	Department Engine in Office created
OO	Department Office in Office created