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gl-posting-codes

Background on general-ledger batch posting codes (HD/DR/CR/RV plus signed "other" rows). Reference only -- follow the task instruction for the exact rules, which may differ per account type.

tasks-extra/cobol-gl-batch-reconcile/environment/skills/gl-posting-codes/SKILL.md

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# GL posting codes on batch tapes

## Common two-character codes

| Code | Conventional role |
|------|-------------------|
| `HD` | Batch or account header — almost always excluded from balance accumulation |
| `DR` | Debit |
| `CR` | Credit |
| `RV` | Reversal — backs out a prior posting |
| `IN` | Interest accrual |
| `FE` | Fee |
| `AD` | Adjustment (typically uses the signed amount as-is) |