SAP Silver Partner · DSAG Member · Solutions in the SAP Store

SAP® Standard ends.

We're starting. We're starting.

SAP Process Optimization for P2P, O2C, and E-Invoicing

The Three-Country Question: When SAP DRC Pays Off – and When It Doesn't

In mid-August, the German-Speaking SAP User Group published a remarkably open article on the licensing of SAP Document and Reporting Compliance. Remarkable ...
Read more →

E-Invoice Mandate 2027: Free Webinar with CAS AG on August 20, 2026

The clock is ticking: Starting January 1, 2027, sending electronic invoices will be mandatory for many companies. How to efficiently switch...
Read more →

International, transparent, flexible: What CICS and CBCS can now do in addition

Honestly, the question has been coming up quite often lately. Not just anymore „How do we get XInvoice and ZUGFeRD in ...”.
Read more →

From Minden to the whole world

Reliable SAP® process optimizers

Starting where the SAP standard ends and finding solutions that lead to cross-departmental satisfaction - THAT is our goal as Consult-SK GmbH (CSK). We focus on long-term customer relationships and look together with you at the optimization potential of your historically grown processes. 

Our core competencies include the implementation of SAP solutions in the areas of Purchase2Pay, Order2Cash and Tax Compliance. After successful go-live, we remain a reliable partner with maintenance and support services.

We are good at that

Our services

Purchase2Pay

Optimize your entire purchasing process - from determining requirements to payment. With our digital solutions, you can reduce manual effort, improve transparency and cut costs.

Order2Cash

Speed up your sales process - from order entry to receipt of payment. Automated workflows ensure error-free processing and faster liquidity.

SmartDocs Suite

Take your document processes to the next level. The SmartDocs Suite enables seamless integration with SAP and automates the processing of orders, invoices, and contracts through intelligent linking.

Tax compliance

Comply with tax requirements efficiently and securely. Our solutions help you comply with KassenSichV and GoBD regulations, from invoice auditing to digital archiving.

Outgoing e-invoices: CBCS

The Cloud Billing Conversion Service (CBCS) automatically converts your outgoing invoices into legally compliant e-invoice formats – for Germany and increasingly more countries. It integrates seamlessly into any SAP environment and also works independently of SAP.

E-invoice receipt: CICS

The Cloud Invoice Conversion Service (CICS) automatically validates and converts incoming e-invoices into standardized formats – with or without SAP in the background, for Germany and other countries.

Management

Success requires a strong team

At CSK, an experienced team takes care of the implementation of your requirements. Our managing directors come from the retail sector and let our customers benefit from their many years of experience in SAP® and process optimization.

"The key to success is to focus on goals, not obstacles."
"Success happens when two join together who have the same goal." - Frank Heister
"Don't just repeat, occasionally overtake." - Otto Pötter
KassenSichV-ready thanks to SAP AddOn

Your central entry point for archiving, auditing and processing of Cash register data. Receipt4S® ensures your tax compliance as part of the internal control system.

DSFinV-K export, automated completeness check, viewable document flow, Z1, Z2 and Z3 access

from receipt to FI document and the other way around: check in SAP® FI/CO and SAP® CAR; if required: Assistance with process documentation

On-premise, cloud or hybrid, storage of originals 1:1

Receipt4S® is also easily accessible on the move thanks to SAP® Fiori

Start an audit run of their POS data with the software that the tax authorities also use.

Screenshot 2026-08-06 at 11.07.57
Cash register data cloud solution

POS Comply is the cloud brother of Receipt4S®, which can be linked to various POS systems thanks to the REST API. Ideal for small and medium-sized companies - even those that don't use SAP!

DSFinV-K export, automated completeness check, viewable document flow, Z1, Z2 and Z3 access

KassenSichV and GoBD-compliant - even without an SAP ERP system. POS Comply offers the option of having an internal control system for a small number of cash registers.

Together with our partner d.velop, we offer a cloud archive. You save on hardware costs and only pay for the archive size you need.

POS Comply is also easily accessible on mobile devices thanks to SAP® Fiori

"Are my cash transaction data and TSE signatures correct and complete?" Carry out a check yourself before the tax office comes knocking.

What's new at CSK?

News

E-invoice8 minutes reading time

The Three-Country Question: When SAP DRC Pays Off – and When It Doesn't

The German-speaking SAP user group published a remarkably open contribution to the licensing of SAP Document and Reporting Compliance in mid-August. This is remarkable because it is not a spin. User companies such as Evonik and Kärcher certify the solution…

RetailOneSolution Network

Three SAP® Partners = One All In One Solution for Store Management 3.0

We are part of the RetailOneSolution Network - an alliance of three SAP® partners who complement each other ideally in terms of technology and strategy in order to jointly offer THE ONE solution for handling sales and merchandise management data. 

Our subsidiaries

REexpect GmbH

With SAP® RE-FX, you have a powerful software module at your disposal to keep the entire real estate life cycle under control. We specialize in customizing this module and supplementing it with smart add-ons. The consultants at our subsidiary, REexpect GmbH, will be happy to support you in taking a close look at your processes.

KUMULON GmbH

Kumulon GmbH is your partner for digital transformation with the SAP Business Technology Platform. We develop tailor-made extensions, intuitive user interfaces and integrations - cloud-based, secure and future-proof. As an SAP partner, we support companies from the idea to the go-live.

Extract

These customers already trust us.

Our reliable partners

Doing good together - our support for the Mindener Tafel e.V. St. Martin

Not everyone has a hot meal on the table every day - that's why we permanently support the Mindener Tafel e.V. With its important work, it ensures that surplus food gets to where it is needed. We think so: This deserves more attention and help!

Get involved! Whether through donations, volunteering or simply by sharing this message - Every support counts! Let's make a difference together.