Update region configuration help for feedin tariff

[cperal99]

Updated region parameter to allow retrieving feedin tariff

[sourcery-ai]

Hey there - I've reviewed your changes - here's some feedback:

• If region = España is mandatory for feed-in tariffs, consider enforcing this via validation or conditional logic rather than relying solely on help text so users can’t accidentally select another region in that context.
• You might want to clarify in the description/help how users know whether they are configuring a grid tariff vs a feed-in tariff (e.g., referencing the relevant parameter or mode), so the guidance on when to use España is unambiguous.

Prompt for AI Agents

Please address the comments from this code review:

## Overall Comments
- If `region = España` is mandatory for feed-in tariffs, consider enforcing this via validation or conditional logic rather than relying solely on help text so users can’t accidentally select another region in that context.
- You might want to clarify in the description/help how users know whether they are configuring a grid tariff vs a feed-in tariff (e.g., referencing the relevant parameter or mode), so the guidance on when to use `España` is unambiguous.

## Individual Comments

### Comment 1
<location> `templates/definition/tariff/esios.yaml:27` </location>
<code_context>
   - name: region
     description:
-      generic: "Retrieve 1 out of 5 regions from the API."
+      generic: "Select 1 out of 5 regions for grid tariff. For feedin tariff always region = España"
     help:
-      en: Península, Canarias, Baleares, Ceuta, Melilla
</code_context>

<issue_to_address>
**question (bug_risk):** Wording implies a constraint that is not enforced by the schema itself.

The description introduces an invariant (feed-in tariffs must use `España`) that isn’t enforced by the schema, which still allows other regions. If other layers rely on this constraint, ensure it’s enforced (e.g., in validation/UI) or reword the description so it accurately matches the actual allowed values.
</issue_to_address>

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[sourcery-ai]

question (bug_risk): Wording implies a constraint that is not enforced by the schema itself.

The description introduces an invariant (feed-in tariffs must use España) that isn’t enforced by the schema, which still allows other regions. If other layers rely on this constraint, ensure it’s enforced (e.g., in validation/UI) or reword the description so it accurately matches the actual allowed values.

[andig]

panic: processing template 'tariff/esios.yaml' failed: template 'esios-tariff-api': param region: description too long (84/50 allowed)- use help instead