STRU and exception tasks accepted; G6 cascade fix, exception class mutants, RTTI unit notes

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

tasks_gen/train/G1903/spec.md

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+# 1. Goal
+A stock report and an OData service must use the same line type for warehouse
+stock positions. Create the DDIC structure {{P}}STOCK_LINE and the DDIC
+structure {{P}}AUDIT_INFO in package $TMP.
+
+# 2. Open questions
+None.
+
+# 3. Context
+- The table {{P}}STOCK exists in package $TMP. Its columns are, in this order:
+  MATERIAL (CHAR 18), PLANT (CHAR 4), NET_AMOUNT (DEC 9,2), CURRENCY (CHAR 5),
+  CREATED_BY (CHAR 12), CREATED_ON (DATS). The key is CLIENT, MATERIAL and
+  PLANT.
+- The table {{P}}STOCK is empty. Test data comes from test doubles.
+- {{P}}AUDIT_INFO is the audit part that other objects use, for example a
+  change log view and a service. {{P}}STOCK_LINE must carry the same audit
+  part.
+- Both structures are used as line types in ABAP SQL and in an OData service.
+
+# 4. Contract
+- Create the DDIC structure {{P}}STOCK_LINE in package $TMP.
+  Components, in this order: material (CHAR 18), plant (CHAR 4),
+  net_amount (DEC 9,2), currency (CHAR 5), created_by (CHAR 12),
+  created_on (DATS).
+- Create the DDIC structure {{P}}AUDIT_INFO in package $TMP.
+  Components, in this order: created_by (CHAR 12), created_on (DATS).
+- {{P}}STOCK_LINE contains all six components itself. It does not use a DDIC
+  include.
+
+# 5. Business rules
+1. {{P}}STOCK_LINE has exactly six components.
+2. The components of {{P}}STOCK_LINE are, in this order: material, plant,
+   net_amount, currency, created_by, created_on.
+3. material is a character field of 18 characters.
+4. plant is a character field of 4 characters.
+5. net_amount is a packed number with 9 digits and 2 decimal places.
+6. currency is a character field of 5 characters.
+7. created_by is a character field of 12 characters.
+8. created_on is a date field of type DATS.
+9. {{P}}AUDIT_INFO has exactly two components, in this order: created_by
+   (CHAR 12) and created_on (DATS).
+10. Every component of {{P}}STOCK_LINE is elementary. {{P}}STOCK_LINE is a
+    flat structure.
+11. The components created_by and created_on of {{P}}STOCK_LINE have the same
+    data type and the same length as the components of {{P}}AUDIT_INFO.
+12. A row of {{P}}STOCK can be read into a work area of type {{P}}STOCK_LINE
+    with ABAP SQL.
+
+# 6. Constraints
+- Release target: SAP_BASIS 816 (ABAP Platform 2025).
+- Package $TMP. Do not use transports.
+- Coding standards: Clean ABAP. No ATC priority 1 or 2 findings.
+- Out of scope: do not change the table {{P}}STOCK.
+
+# 7. Acceptance
+- Both structures are active and have no syntax error.
+- The hidden tests pass.
+- Write ABAP Unit tests with CL_OSQL_TEST_ENVIRONMENT in a global test class
+  (for example {{P}}T16_TEST). The tests must prove rules 1 to 12.