Currency Amount xx.xx in field FIX_VAL_PER01 could not be converted BPC Retraction

Hello Experts,

We are using BPC BAdi Retraction. There is an error form some records that says Currency Amount xx.xx in field FIX_VAL_PER01 could not be converted BPC Retraction, it happens with large amounts. What is the restriction?

Any idea?

thank you in advance

Best regards.