Based on the provided DECLARE model specifications and constraints, we can analyze and identify potential anomalies such as conflicts or redundancies among the constraints. Here is an analysis:

1. **Conflicting Constraints**:
   - **Existence and Exactly 1**: Each of these activities (`Declaration FINAL_APPROVED by SUPERVISOR`, `Request Payment`, `Payment Handled`, `Declaration SUBMITTED by EMPLOYEE`) are mentioned to occur at least once (`Existence`) and exactly once (`Exactly 1`), which is not inherently conflicting but redundant. Stating that an activity must occur exactly once implicitly ensures its existence.
   - **Responded Existence vs. Absence**: While there are no direct conflicts listed between `Responded Existence` and `Absence` since they apply to different activities, in a more complex model, this type of constraint could potentially create conflicts if not carefully managed.

2. **Redundant Constraints**:
   - **Responded Existence and Co-Existence**: There are several instances where `Responded Existence` and `Co-Existence` overlap, such as the pairs (`Request Payment`, `Payment Handled`), essentially duplicate when considering that all involved activities must occur at least once. This redundancy is more conceptual since `Responded Existence` implies a weaker condition than `Co-Existence`, which might not signal a logical issue but presents unnecessary complexity.
   - **Succession and its Components (Response and Precedence)**: Having `Succession` constraints along with separate `Response` and `Precedence` constraints for the same activity pairs, e.g., (`Request Payment`, `Payment Handled`), is redundant because `Succession` already implies both `Response` and `Precedence`. This is also true for their alternate and chain versions.

3. **Unnecessary Detailing**:
   - **Alternate/Chain versions alongside their Basic Forms**: Specifying both a constraint and its alternate or chain version for the same pair of activities (e.g., `Response` and `Chain response` for (`Declaration FINAL_APPROVED by SUPERVISOR`, `Request Payment`)) could be considered unnecessary in contexts where the stricter form (alternate/chain) is always expected to hold, thus rendering the basic form implied and unnecessary.

4. **Precision in Specification**:
   - The DECLARE model notably benefits from precision in the specification of constraints to ensure that all intended behaviors are correctly captured, and anomalies are minimized. In the given model, while not an anomaly per se, ensuring that constraints like `Initialization: Declaration SUBMITTED by EMPLOYEE` are meaningfully chosen to set a proper starting point for the process is crucial for avoiding unintended process executions that would not meet real-world requirements.

In conclusion, the primary anomalies in your model revolve around redundancy. A critical review focusing on removing or clarifying these redundant constraints could simplify the model, making it easier to understand and implement while reducing the risk of misinterpretation or errors in automation and compliance checking.