TBG6 Architecture, Engineering and Construction
This specification provides the definition of the Payment valuation message (CONPVA) to be used in Electronic Data Interchange (EDI) between trading partners involved in administration, commerce and transport.
1.1 Functional definition
Typically this message will be used between a contractor and the client's representative, during the process of approving the value and payment for work completed for a given period of time.
1.2 Field of application
The Payment valuation message may be used for both national and international applications. It is based on universal practice related to administration, commerce and transport, and is not dependent on the type of business or industry.
The following descriptions refer to the construction industry as an example, but do not exclude other business sectors' implementation.
This message is to be used to support the business process of communicating the value of progress against groups of work items which make up a construction project.
There are several examples within the construction process where one party is required to advise another party about the value of work performed during a specific time period or since the start of the project.
A project may be subdivided into individual groupings of work, referred to as items and it is against these items that progress quantities are reported.
Similar exchanges take place on the entire or part of the project and between other parties also involved in the construction of the project.
Within the Construction industry there are numerous rules which govern this part of the process. Although, efforts have been made to keep the design of the message generic, other potential users of this message are cautioned about the specific and original role for which this message has been designed.
This is only one of a number of messages being designed for the construction industry. This particular message refers to already established items of work, these items will have been defined at the start of the project. Work is well advanced for suitable EDI messages to address this part of the process.
Allowance has been made within CONPVA message for "new" items of work. There are a number of reasons why additional items of work will occur once a project has started.
Each work item may contain more than one quantity and this has been accommodated. An example of this would be the inclusion of both a cumulative and a "this period" quantity.
In addition to conveying specific payment values this message is designed to record details of revisions and fluctuation to standard tables of rates and payment factors which are used in the calculation of the payment value.
Confirmation of values processed for direct payment by the client are also catered for. These relate to individual entries within a CONDPV message.
See UNTDID, Part 4, Chapter 2.3 UN/ECE UNSM - General Introduction, Section 1.
3. TERMS AND DEFINITIONS
3.1 Standard terms and definitions
See UNTDID, Part 4, Chapter 2.3 UN/ECE UNSM - General Introduction, Section 2.
4. MESSAGE DEFINITION
4.1 Data segment clarification
This section should be read in conjunction with the segment table which indicates mandatory, conditional and repeating requirements.