C_CPI Integration Suite Development Practice Question
An integration developer is configuring a SOAP receiver adapter in SAP Cloud Integration to call an external web service that requires WS-Security UsernameToken with a password digest. The developer has configured the adapter with the correct alias for the private key and the user credentials. During testing, the external service rejects the request with a security fault stating that the digest is invalid. What is the most likely cause?
⚠ Common exam trap
The trap here is assuming that a digest error is caused by an unsupported algorithm or wrong security policy, when it is often a simple credential mismatch such as a trailing space.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The password stored in the security material contains a trailing space or special character that does not match the password expected by the external service.
WS-Security UsernameToken password digest is a hash over the password, nonce, and timestamp. Any discrepancy in the stored password, including invisible characters or incorrect escaping, changes the digest and triggers an invalid digest fault. Verifying the exact password in the security material and ensuring it matches the external service expectation resolves the issue.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The external service expects the digest to be computed using SHA-256, but SAP Cloud Integration always uses SHA-1 for UsernameToken digests.
Why it's wrong here
While digest algorithms can matter, the SOAP adapter supports configuring the digest algorithm. The described fault is more commonly caused by a credential mismatch. Blaming a fixed SHA-1 algorithm is not accurate, as the adapter allows selection of the digest algorithm to match the service requirements.
- ✓
The password stored in the security material contains a trailing space or special character that does not match the password expected by the external service.
Why this is correct
WS-Security UsernameToken with password digest is computed from the password, nonce, and timestamp. If the stored password differs even by a trailing space or an incorrectly escaped special character, the digest will not match the one computed by the external service, causing the security fault about an invalid digest.
- ✗
The SOAP adapter was configured with the WS-Security option 'Sign and Encrypt' instead of 'Username Token', so the digest was not generated correctly.
Why it's wrong here
If 'Sign and Encrypt' were selected, the message would be signed and encrypted, but the UsernameToken digest would still be generated if configured. The security fault specifically mentions an invalid digest, which points to a mismatch in the password or nonce handling rather than the overall security policy selection.
- ✗
The SOAP adapter does not support WS-Security UsernameToken with password digest and only supports plain text passwords.
Why it's wrong here
SAP Cloud Integration SOAP adapter does support WS-Security UsernameToken with password digest. The error is not due to lack of support but due to a mismatch in the credentials or digest parameters, so this statement is factually incorrect for the scenario.
Visual reference
About these practice questions
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official SAP exam blueprint
This C_CPI practice question is part of Courseiva's free SAP certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the C_CPI exam.