In the area of fixed network services, clearing means the mutual clarification and resolution of technical disruptions through to disruptions in the initiation and execution of service relationships between the same partners or between end-customer contract partners.
Despite a high degree of automation in the fixed network area via interfaces established in the market (e.g., WITA, WBCI, S/PRI) for order processes, preconciliation, and provider switching, manual intervention (clearing) is still unavoidable in many cases. It is always necessary when, for example, messages are not received or deadlines are exceeded at the interfaces.
These manual interventions occur in the course of the contract cycle, especially in the following business scenarios:

Up to now, communication between the telecommunications providers involved to clarify functional and technical issues has been defined almost exclusively bilaterally and was therefore by no means uniform. In addition, manual processing of a clearing scenario usually takes between 5 and 15 minutes. In view of the approximately 40,000 clearing cases per month in the total market of more than 700 participants, it became clear what considerable personnel effort and costs are involved.
As a result, the Interfaces & Processes Working Group (ak-spri.de) bundled all clearing processes in a work manual and made it available to all market participants. Another milestone was the digitization of the work manual in the development and introduction of a clearing platform. Together with the service providers, the working group designed the system, which is based on the approved interface descriptions, process flows and work manuals of the working group for the clearing business case.  
The system builds on the existing work manual and converts the processes described there for different clearing scenarios into digital workflows. Thus, the automated processing of clearing scenarios via the clearing platform significantly reduces financial expenses.

Clearing platform is therefore:

The clearing platform is a service platform for end-customer contract partners in the fixed network area who want to replace their e-mail communication with the individual market participants or their EKPs with a modern, cloud-based IT solution in order to save time and costs.
All individual clearing processes are digitally mapped on the platform, which are described by the working group Interfaces and Processes (AK S&P) in the working manual.
The processing of clearing cases can be done via an API as well as via a GUI, depending on the needs of the market participants.