Date Format Deserialization Error

usabilityActiveRising

The billing product list command fails due to an inability to deserialize date formats in the response data, leading to unexpected errors.

Opportunity Score (Heuristic (unvalidated)):65 · High · heuristic
First seen: 9/15/2026
Last seen: 10/18/2026

Score Breakdown

Heuristic ranking from public discussion signals — not a validated prediction of commercial opportunity, demand, or willingness to pay.

Composite 65/100 (High, unvalidated). Top driver: Severity (25% weight, 20 pts).

Frequency · 25% · 14 pts · XPS relevance56

Heuristic only — often urgency map or random scaffolding on ingest, not measured mention frequency. Maps to XPS relevance (with market size).

Severity · 25% · 20 pts · XPS quality80

LLM/mock judgment of intensity from title/summary text — not ops or ticket data. Maps to XPS quality (with willingness to pay).

Willingness to pay · 30% · 19.5 pts · XPS quality65

LLM/mock purchase-intent guess from text — not invoices, surveys, or paid seats. Maps to XPS quality.

Trend · 10% · 6.5 pts · XPS novelty65

Heuristic/scaffold (often random or fixed on insert) — not a verified mention trajectory. Maps to XPS novelty.

Market size · 10% · 5.4 pts · XPS relevance54

Heuristic/scaffold (often random or fixed) — not TAM research. Maps to XPS relevance (with frequency).

Catalog notes (not predictive analysis)

Date Format Deserialization Error (usability). Catalog heuristic opportunity score: 65/100 — a chosen formula over discussion-signal facets, not evidence of demand, conversion, or willingness to pay. Treat as browsing rank, not a commercial prediction.

The billing product list command fails due to an inability to deserialize date formats in the response data, leading to unexpected errors.

Source Examples

azure/azure-cli Issues·Sep 15, 2026
“Billing product list fails on date format returned <!--- 🛑 Please check existing issues first before continuing: https://github.com/Azure/azure-cli/issues ---> ### **This is autogenerated. Please review and update as needed.** ## Describe the bug **Command Name** `az billing product list` **Errors:** ``` PS /home/USER> az billing product list --account-name "ACCOUNT_NAME" --profile-name "PROFILE_NAME" Command group 'billing product' is in preview and under development. Reference and support levels: https://aka.ms/CLI_refstatus The command failed with an unexpected error. Here is the traceback: ('Unable to deserialize response data. Data: [{\'id\': \'/providers/Microsoft.Billing/billingAccounts/ACCOUNT_NAME/products/PRODUCT_1\', \'name\': \'PRODUCT_1\', \'properties\': {\'autoRenew\': \'On\', \'availabilityId\': \'REDACTED\', \'billingProfileId\': \'/providers/Microsoft.Billing/billingAccounts/ACCOUNT_NAME/billingProfiles/PROFILE_NAME\', \'billingProfileDisplayName\': \'Direct\', \'endDate\': \'10/01/2026\', \'invoiceSectionId\': \'/providers/Microsoft.Billing/billingAccounts/ACCOUNT_NAME/billingProfiles/PROFILE_NAME/invoiceSections/INVOICE_SECTION\', \'invoiceSectionDisplayName\': \'DISPLAY_NAME\', \'productType\': \'PRODUCTPRODUCT\', \'productTypeId\': \'REDACTED\', \'skuId\': \'0001\', \'skuDescription\': \'PRODUCTPRODUCT\', \'purchaseDate\': \'12/02/2024\', \'quantity\': REDACTED, \'status\': \'AutoRenew\', \'tenantId\': \'TENANT_ID\'}, \'type\': \'Microsoft.Billing/billingAccounts/products\'}, {\'id\': \'/providers/Microsoft.Billing/billingAccounts/ACCOUNT_NAME/products/PRODUCT_2\', \'name\': \'PRODUCT_2\', \'properties\': {\'autoRenew\': \'On\', \'availabilityId\': \'REDACTED\', \'billingFrequency\': \'P1M\', \'billingProfileId\': \'/providers/Microsoft.Billing/billingAccounts/ACCOUNT_NAME/billingProfiles/PROFILE_NAME\', \'billingProfileDisplayName\': \'Direct\', \'endDate\': \'06/12/2027\', \'invoiceSectionId\': \'/providers/Microsoft.Billing/billingAccounts/ACCOUNT_NAME/billingProfiles/PROFILE_NAME/invoiceSections/INVOICE_SECTION\', \'invoiceSectionDisplayName\': \'DISPLAY_NAME\', \'productType\': \'PRODUCTPRODUCT\', \'productTypeId\': \'REDACTED\', \'skuId\': \'0001\', \'skuDescription\': \'PRODUCTPRODUCT\', \'purchaseDate\': \'09/17/2025\', \'quantity\': 999, \'status\': \'AutoRenew\', \'tenantId\': \'TENANT_ID\'}, \'type\': \'Microsoft.Billing/billingAccounts/products\'}, {\'id\': \'/providers/Microsoft.Billing/billingAccounts/ACCOUNT_NAME/products/PRODUCT_3\', \'name\': \'PRODUCT_3\', \'properties\': {\'autoRenew\': \'On\', \'availabilityId\': \'REDACTED\', \'billingProfileId\': \'/providers/Microsoft.Billing/billingAccounts/ACCOUNT_NAME/billingProfiles/PROFILE_NAME\', \'billingProfileDisplayName\': \'Direct\', \'endDate\': \'10/12/2026\', \'invoiceSectionId\': \'/providers/Microsoft.Billing/billingAccounts/ACCOUNT_NAME/billingProfiles/PROFILE_NAME/invoiceSections/INVOICE_SECTION\', \'invoiceSectionDisplayName\': \'DISPLAY_NAME\', \'productType\': \'PRODUCTPRODUCT\', \'productTypeId\': \'REDACTED\', \'skuId\': \'0001\', \'skuDescription\': \'PRODUCTPRODUCT\', \'purchaseDate\': \'10/13/2025\', \'quantity\': 2, \'status\': \'AutoRenew\', \'tenantId\': \'TENANT_ID\'}, \'type\': \'Microsoft.Billing/billingAccounts/products\'}], [Product], DeserializationError: ("Unable to deserialize response data. Data: 12/02/2024, iso-8601, DeserializationError: (\'Cannot deserialize datetime object., ValueError: Invalid datetime string: 12/02/2024\', ValueError(\'Invalid datetime string: 12/02/2024\'))", DeserializationError(\'Cannot deserialize datetime object., ValueError: Invalid datetime string: 12/02/2024\', ValueError(\'Invalid datetime string: 12/02/2024\')))', DeserializationError("Unable to deserialize response data. Data: 12/02/2024, iso-8601, DeserializationError: ('Cannot deserialize datetime object., ValueError: Invalid datetime string: 12/02/2024', ValueError('Invalid datetime string: 12/02/2024'))", Deserializat”
— teeyenng↗

Competitive Landscape

  • Existing solutions are either too expensive or too limited
  • Most competitors target enterprise, leaving mid-market underserved
  • Community scripts and manual processes are the primary alternative

Recommended Next Steps

  1. ✓Validate pain intensity with 5-10 target customer interviews
  2. ✓Build minimal viable solution addressing the core workflow
  3. ✓Test pricing with early adopters from community forums

Related Pain Points

Target Customers

  • IT teams at mid-size organizations (100-2000 employees)
  • MSPs and consultants managing multiple client environments
  • Teams without dedicated specialist staff for this domain

Monetization Ideas

  1. 1SaaS subscription model ($99-$499/month depending on scale)
  2. 2Usage-based pricing aligned with value delivered
  3. 3Freemium tier to drive adoption and prove value