3791327 - Error "Account is Blocked for Posting" in App Create Inbound Invoice for STO – India

While using the "Create Inbound Invoices for STOs – India" app, the system triggers standard GST tax codes instead of the custom GST tax codes during Inbound STO Invoice posting.
As a result, the system derives G/L account and the following error is encountered:

"Account ABC is blocked for posting."

SAP S/4HANA Cloud Public Edition

1. Navigate to App Create Inbound Invoice for STO – India to create an inbound STO invoice.
2. Post the document; the system derives a standard GST tax code and maps it to G/L account ABC.
3. The posting fails with the error: "Account ABC is blocked for posting."

Cause 1: GST condition types are not classified in configuration activity SSCUI 101934 – Classify Condition Types.

Cause 2: The Automatic Account Determination is not correctly configured for the custom tax codes. 

Cause 3:  G/L accounts are not defined and assigned via SSCUI 101871 – Define and Assign G/L Accounts for all accounting keys derived from the custom condition types.  

Resolution 1: Add Missing Condition Type Classifications in SSCUI 101934 - Classify Condition Types

1. Navigate to Manage Your Solution or SAP Central Business Configuration (CBC) and search for configuration activity SSCUI 101934 – Classify Condition Types.
2. Add the missing condition type entries for the tax procedure and pricing procedure used in the STO scenario.

Resolution 2: Verify G/L Account Assignments in Automatic Account Determination

1. Navigate to the "Automatic Account Determination" configuration activity.
2. Select "Tax on Sales/Purchases" and transaction key for the relevant Chart of Accounts.
3. Identify the entry for the affected tax code and review the assigned G/L account.
4. Ensure the custom GST tax codes are mapped to valid, unblocked G/L accounts.

Resolution 3: Define and Assign G/L Accounts via SSCUI 101871
Ensure G/L accounts are defined and assigned via SSCUI 101871 – Define and Assign G/L Accounts for all accounting keys derived from the custom condition types. Missing entries here can also cause transaction key and G/L account determination errors.

After completing the above configuration steps, retest inbound STO invoice posting.

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