theonedev/onedev · error · ValidationException

Not eligible for multi-value

Error message

Not eligible for multi-value

What it means

PullRequestChoiceInput.convertToObject accepts at most one value; it converts a single string to a Long pull request id/number. When the input list contains more than one element it throws 'Not eligible for multi-value', because this input type is defined as single-choice.

Source

Thrown at server-core/src/main/java/io/onedev/server/buildspecmodel/inputspec/PullRequestChoiceInput.java:37

			buffer.append("    @NotNull\n");
		buffer.append("    @PullRequestChoice(useNumber=true)\n");
		inputSpec.appendMethods(buffer, index, "Long", null, null);
		
		return buffer.toString();
	}

	public static Object convertToObject(List<String> strings) {
		if (strings.size() == 0) {
			return null;
		} else if (strings.size() == 1) {
			String value = strings.iterator().next();
			try {
				return Long.valueOf(value);
			} catch (NumberFormatException e) {
				throw new ValidationException("Invalid pull request id/number");
			}
		} else {
			throw new ValidationException("Not eligible for multi-value");
		}
	}

	public static List<String> convertToStrings(Object value) {
		if (value instanceof Long)
			return Lists.newArrayList(value.toString());
		else
			return new ArrayList<>();
	}

}

View on GitHub (pinned to d44925c47c)

Solutions

1. Supply exactly one pull request id/number string in the list.
2. If multiple values are truly needed, enable multi-value on the input definition instead of passing a list.
3. Split or reduce upstream data (e.g. take the first or reject extra values) before calling convertToObject.

Example fix

// before
List<String> vals = Lists.newArrayList("12", "15");
Object value = PullRequestChoiceInput.convertToObject(vals); // throws

// after
List<String> vals = Lists.newArrayList("12");
Object value = PullRequestChoiceInput.convertToObject(vals);

boolean singleValue(List<String> strings) {
    return strings != null && strings.size() <= 1;
}

try {
    Object pr = PullRequestChoiceInput.convertToObject(values);
} catch (ValidationException e) {
    // input is single-choice; reduce values to one element
}

When it happens

Trigger: Calling PullRequestChoiceInput.convertToObject with a List<String> of size > 1, e.g. multiple selected pull requests supplied where only one is allowed.

Common situations: A buildspec or job input marked as a pull-request choice (single value) is fed a comma-separated or multi-selected list from a script or automation; a UI/form change started sending multiple values without switching the input to multi-value mode.

Understand the failure class

Background: "Must be a positive integer", "Invalid value", "Unsupported": the invalid-argument-value error family, when a library rejects the value you pass — this error's family across 35 libraries.

Related errors

• Not eligible for multi-value
• Not eligible for multi-value
• Not eligible for multi-value
• Not eligible for multi-value
• Circular template usages (

AI-assisted analysis of theonedev/onedev@d44925c47c (2026-09-06). Data as JSON: /api/errors/4893ab1e4d6397df. Report an issue: GitHub.