SAP Logistics Consultant

SAP logistics work sits between a business process and a system that already has opinions about it: goods arrive, get put away, get picked and get shipped, and every step leaves documents behind. This route reads the site's SAP guides in the order the process runs, then adds the integration and SQL skills that separate a consultant who can explain a problem from one who can only report it. It is background reading, not SAP training: this site is not affiliated with SAP, issues no certificate, and cannot give you a system to work in.

5 stages · 22 steps

1. 1

   What SAP is, and the modules a warehouse runs on

   Explain what an ERP does and what changed with S/4HANA, then follow a material from a purchase order to a storage bin and say which module owns which part of that.

   • Concept guideSAP FundamentalsClients, modules, master data and documents: the vocabulary every later step uses.
   • Concept guideS/4HANA OverviewWhat the current platform changed architecturally, and why older habits sometimes mislead.
   • Concept guideSAP MM: Materials ManagementProcurement and inventory come first, because they create the documents the warehouse reacts to.
   • Concept guideSAP WM: Warehouse ManagementStorage locations, bins and transfer orders — the classic warehouse model you will still meet.
   • Concept guideSAP EWM: Extended Warehouse ManagementRead after WM: the differences make more sense as differences than on their own.
2. 2

   The logistics process end to end

   Describe inbound and outbound flows as a sequence of documents, and see where other systems plug in.

   • Concept guideInbound and Outbound LogisticsThe process the previous stage was preparation for.
   • Concept guideIDoc and API IntegrationAlmost nothing in a logistics landscape is only SAP; this is how the pieces exchange data.
   • Concept guideREST APIsBackground for the modern half of that integration work, in non-SAP terms.
   • Developer toolJSON Formatter & ValidatorFor reading a payload a carrier or warehouse system sent you.
3. 3

   Reading the data yourself

   Answer 'did the posting actually happen' with a query rather than an opinion.

   • Concept guideSQL for SAP and TroubleshootingHow SAP's tables and document flow look when you query them directly.
   • Language guideSQLThe underlying language, learned properly rather than copied from a colleague's script.
   • PlaygroundSQL playgroundPractise joins and filters somewhere you cannot do any damage.
   • Concept guideSQL vs NoSQLUseful for the satellite systems around SAP, which are often not relational.
   • Interview prepSQL interview questionsFunctional interviews do ask you to read and reason about a query.
4. 4

   Troubleshooting habits

   Take an incident apart in a defensible order: what was sent, what was received, what was posted, who was allowed to do it.

   • Concept guideError HandlingWhat an error message is trying to tell you, and why some failures are silent.
   • Concept guideDistributed Systems BasicsDuplicate IDocs, retries and out-of-order messages are distributed-systems problems.
   • Concept guideAuthentication vs AuthorizationA large share of 'it does not work' turns out to be a missing authorisation.
   • Developer toolUnix Timestamp ConverterFor interface logs whose timestamps are neither local nor readable.
   • Developer toolRegex TesterFor finding one document number in a very large log file.
5. 5

   Interview topics that come up

   Talk about integrations, data and the way you work with the people whose process you are changing.

   • Interview prepBackend & API interview questionsThe integration half of the role gets questioned in these terms.
   • Interview prepDatabase interview questionsReading a schema and reasoning about a join is the data half of this role.
   • Interview prepBehavioral interview questionsConsulting is judged on how you handle disagreement and unclear requirements.

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