The connection parameters can be divided into the following two categories:

Standard interface

Category	Description
Elster WebService	Configuration of the interface to the transfer client (TC) for Elster filing. The configuration includes at least service name [ericXX], the server URL (host) and the port.
VAT ID check	Configuration of the interface to the transfer client (TC) for the VAT ID check. The VAT ID is checked by the Federal Central Tax Office or VIES. The configuration includes at least service name [vatidcheck], the server URL (host) and the port.
VAT ID check Proxy	A proxy server can be specified here to provide the connection of 'vatidcheck' web-service to the Internet. The configuration contains at least the server URL (host) and the port. Optionally, username, password and authentication method can be specified.
GTC Master data Import	Connection to another AMANA product (e.g. tax portal) that shares its master data with other (client) applications. Required fields are service name [gtcMaster data], the server URL (host), port, username and password of the target system. When connected to the income tax system, the entry 'GTC' is expected as parameter 1.
TransferClient Proxy	Configuration of a proxy server between the VAT@GTC and the Transfer Client.
LDAP	The required LDAP parameter for a possible SingleSignOn authentication per LDAP can be entered here. The configuration includes at least service name, the LDAP Server URL (host) and the port. Optionally, username, password and authentication method can be specified.
Internet Proxy	Configuration of a proxy server that is set up between a transfer client and the Internet. The configuration includes at least the server URL (host) and the port. Optional user name and password as well as the authentication procedure can be specified.
STMP-Server	Configuration of a STMP server to receive an e-mail when forgetting the user password.
HMRC MTD API	New configuration of the interface for sending to HMRC (the UK tax office). The configuration includes at least the API endpoint, the server URL (host) and the port.
Database	This parameter links the SAP database to the VAT audit module.
REST-Service	This connection parameter connects outsourced REST services for the transmission to tax offices (e.g. FinanzOnline). The configuration includes at least the API endpoint, the server URL (host) and the port. Here you set whether a REST proxy is also required.
REST-AuthorizationServer	This connection parameter is used to authorize the modules integrated by a REST service. The configuration includes at least the API endpoint, the server URL (host) and the port. Here you set whether a REST proxy is also required.
REST-Proxy	Configuration of a proxy server that is set up between a REST service and the Internet. The configuration includes at least the server URL (host) and the port.

Custom interfaces

Category

Description

ERP Group

Companies that are stored on similar SAP machines (e.g. same chart of accounts, tax code) can be gathered in one ERP group in the VAT@GTC. The names of the ERP groups can be created in the [Admin] dialogue. In the [Company] dialogue the company is assigned to the group. It is possible to simplify the tax code creation and maintenance by copying the new tax codes to all companies of the same ERP group. Furthermore, the reconciliation accounts can be created and maintained for ERP groups instead for every individual company.

For an ERP group, the entries Name and Parameter 1 must be filled, ideally with the same name.

ERP server

It is possible to define in which SAP machine the company is stored. The name of the ERP groups can be created in the [Admin] dialogue. In the [Company] dialogue the company is assigned to the ERP machine (server). This information can be used, for example, in an accounting record for the respective assignment.

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